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Papers by Marco Duretto

Research paper thumbnail of Nuytsia Four new species of Boronia (Rutaceae) from the Kimberley region of Western Australia

All of these species have very restricted distributions and are of conservation concern. All new ... more All of these species have very restricted distributions and are of conservation concern. All new species are illustrated. A revised key to Boronia species in the Kimberley region is provided. Boronia kalumburuensis was recognised by Duretto (1997) based on a small number of collections from around Kalumburu and Theda Station. It is placed in Boronia subser. Filicifoliae Duretto (ser. Lanuginosae) which currently contains four other described species, viz. B. barrettiorum Duretto, B. filicifolia A.Cunn. ex Benth., B. minutipinna Duretto and B. pauciflora (Duretto 1999; Duretto et al. 2013). Other Kimberley species from ser. Lanuginosae are B. jucunda Duretto (subser. Jucundae Duretto), B. lanuginosa Endl. and B. wilsonii (subser. Lanuginosae). Further fieldwork in the region has provided additional collections of B. kalumburuensis s. lat. from known locations, as well as new populations from the King Edward River to Lawley River and Prince Regent River. These additional populations each have their own unique characteristics, requiring a reassessment of species boundaries in B. kalumburuensis and B. wilsonii. Careful study of these populations has concluded that three taxa should be recognised at species rank from B. kalumburuensis s. lat. and we describe B.

Research paper thumbnail of Nuytsia Taxonomic notes on Boronia species of north-western Australia, including a revision of the Boronia lanuginosa group(Boronia section Valvatae: Rutaceae)

M.F. Duretto. Taxonomic notes on Boronia species of northwestern Australia, including a revision ... more M.F. Duretto. Taxonomic notes on Boronia species of northwestern Australia, including a revision of the Boronia lanuginosa group (Boronia section Valvatae: Rutaceae). Nuytsia 11(3): 301-346 (1997). The revision of Boronia (Rutaceae) in the Northern Territory, the Kimberley Region of Western Australia, and northwestern Queensland is completed, and a key to all species is provided. The B. lanuginosa Endl. species group is characterized as those species with pinnate leaves, a calyx as large as or larger than the corolla, multiangular stellate hairs, and a pronounced ridge on the micropylar side of the seed. This clade comprises the B. lanuginosa species complex, B. filicifolia A. Cunn. ex Benth., B. pauciflora W. Fitzg. and five newly described species: viz. B. decumbens Duretto, B. minutipinna Duretto, B. kalumburuensis Duretto, B. jucunda Duretto and B. tolerans Duretto. The B. lanuginosa species complex has four available names and was analysed numerically using phenetic methods. Two taxa were identified in the analysis. Boronia artemisiifolia var. wilsonii F. Muell. ex Benth. is raised to specific status while B. affinis R. Br. ex Benth. and B. artemisiifolia F. Muell. are synonymized under B. lanuginosa. Additionally, B. rupicola Duretto is described, and B. filicifolia, B. lanceolata F. Muell., B. lanuginosa and B. pauciflora are lectotypified. Boronia lanuginosa species complex Endlicher (1837) described B. lanuginosa from material that was collected by Ferdinand Bauer and labelled King George's Sound. King George Sound is in southwestern Australia, but Bauer had travelled with Matthew Flinders, on the "Investigator", around northern Australia (see Specht 1958a,b; Wilson 1975). Bentham (1863), who had not seen the type material of B. lanuginosa, applied this name to a southwestern Western Australian species that is found growing around King George Sound (Wilson 1975). Later, Mueller (1859) described B. artemisiifolia (as B. artemisifolia) from material he collected while on Gregory's Northern Australian Expedition. Bentham (1863) used this later name (written as B. artemisiaefolia) in his "Flora Australiensis". Subsequently, and up until 1975, specimens of Boronia from northern Australia that had a dense indumentum, pinnate leaves and a large calyx have been called B. artemisiifolia, with orthographic variation. After studying type material of B. lanuginosa, Wilson (1975) realized Bentham's error and synonymized B. artemisiifolia with B. lanuginosa. He concluded that the type locality of B. lanuginosa was somewhere on the coast of Arnhem Land where Flinders'ship "The Investigator" had travelled on its second voyage. Robert Brown, who was on "The Investigator" with Bauer and Flinders, collected plant specimens from the islands of the Gulf of Carpentaria that are identical to the type material of B. lanuginosa (Wilson pers. comm.), strengthening Wilson's argument. The southwestern Western Australian species that had previously been called B. lanuginosa is now known as B. stricta Bartl. (Wilson 1975). Bentham (1863) described B. affinis, B. filicifolia and B. artemisiifolia var. wilsonii (presently synonymized under B. lanuginosa) from northwestern Australia. The type material of B. affinis ("N. Australia. Islands of the Gulf of Carpentaria, and mainland opposite Groote Eylandt") was collected by Robert Brown while travelling with Matthew Flinders and Ferdinand Bauer on "The Investigator" in 1802-03. The main feature that has been used to distinguish B. affinis from B. lanuginosa is that B. affinis is glabrous or has a sparse indumentum while B. lanuginosa has a dense indumentum. There is much confusion surrounding the application of these two names. Judging from present herbarium records and collections, B. affinis and B. lanuginosa are sympatric in the Northern Territory. Boronia affinis is considered to be rare, possibly endangered, and confined to the Northern Territory (Briggs & Leigh 1988 [not listed in Briggs & Leigh 1996]; Hnatiuk 1990) while B. lanuginosa (as currently circumscribed) is common and widespread from King Sound (WA) to Wollogorang Station (NT) (Figure 1). Boronia lanuginosa has an ontogenetic sequence in leaf development from glabrous leaves, or leaves with a sparse simple and stellate indumentum, to leaves having a dense stellate indumentum, as has been observed in other members of section

Research paper thumbnail of New subspecies of Leionema bilobum (Rutaceae)

Morphological variation in Leionema bilobum (Lindl.) Paul G. Wilson is described taxonomically as... more Morphological variation in Leionema bilobum (Lindl.) Paul G. Wilson is described taxonomically as four subspecies: viz. subsp. bilobum, which is restricted to the eastern ranges of Grampians National Park, Victoria; subsp. thackerayense Duretto & K.L.Durham subsp. nov., which is restricted to the Victoria Range, Grampians National Park, and the nearby Black Range, Victoria; subsp. truncatum (Hook.f) Duretto & K.L.Durham stat. et comb. nov., which is endemic to Tasmania; and subsp. serrulatum (F.Muell.) Duretto & K.L.Durham stat. et comb. nov., which is restricted to the Eastern and Gippsland Highlands, Victoria. A key is provided and all subspecies are illustrated.

Research paper thumbnail of Boronia barrettiorum (Boronia subseries Filicifoliae : Rutaceae), a new species from the Kimberley Region of north-western Australia

Duretto, M.F. Boronia barrettiorum ( Boronia subseries Filicifoliae : Rutaceae), a new species fr... more Duretto, M.F. Boronia barrettiorum ( Boronia subseries Filicifoliae : Rutaceae), a new species from the Kimberley Region of north-western Australia. Nuytsia 16(1): 15-20 (2006). Boronia barrettiorum Duretto sp. nov. ( Boronia subseries Filicifoliae : Rutaceae) is described and its relationships discussed. Variation in B. pauciflora W.Fitz. is also discussed and a key to the species of Boronia found in the Kimberley Region is provided. The Kimberley Region of northern Western Australia is a minor centre of endemism for Boronia. Wheeler (1992), in the first regional account of the genus, illustrated and gave accounts for four species (B. filicifolia A.Cunn. ex Benth., B. lanuginosa Endl., B. pauciflora W.Fitz. and B. sp. A). Wheeler also discussed a number of taxonomic problems. A phenetic analysis of the B. lanuginosa species-complex (Duretto 1997) identified two widespread species, B. lanuginosa and B. wilsonii (F.Muell. ex Benth.) Duretto (both found in the Kimberley Region and the...

Research paper thumbnail of Boronia (Rutaceae) is polyphyletic: Reinstating Cyanothamnus and the problems associated with inappropriately defined outgroups

Research paper thumbnail of Hibbertia fumana (Dilleniaceae), a species presumed to be extinct rediscovered in the Sydney region, Australia

Telopea

Hibbertia fumana Sieber ex Toelken (Dilleniaceae), a species thought to be extinct, was rediscove... more Hibbertia fumana Sieber ex Toelken (Dilleniaceae), a species thought to be extinct, was rediscovered during routine botanical surveys in western Sydney. A revised description, including for the first time that of fruit and seed, is provided along with ecological notes, an illustration, and a photograph.

Research paper thumbnail of Boronia hapalophylla (Rutaceae), a new and restricted species from north-eastern New

Wales, is newly described and illustrated, and notes on its relationships are given.

Research paper thumbnail of A reassessment of Asterolasia correifolia (Rutaceae) with descriptions of the newly recognised A. exasperata and A. sola

Telopea

A reassessment of Asterolasia correifolia (Rutaceae), with descriptions of the newly recognised A... more A reassessment of Asterolasia correifolia (Rutaceae), with descriptions of the newly recognised A. exasperata and A. sola.

Research paper thumbnail of Asterolasia beckersii (Rutaceae), a new species from the Northern Tablelands, New South Wales

Telopea

Asterolasia beckersii Orme & Duretto (Rutaceae) is newly described. The species is restricted to ... more Asterolasia beckersii Orme & Duretto (Rutaceae) is newly described. The species is restricted to the Nundle area (Tamworth district) on the Northern Tablelands of New South Wales. The species is related to A. correifolia (A.Juss.) Benth. and A. hexapetala (A.Juss.) Druce and can be distinguished from these by leaf, inflorescence and floral characters. The ecology and conservation status of A. beckersii are discussed and a key to Asterolasia for eastern Australia is provided. Orme and Duretto Conservation status: In 2004, this species was determined to be Endangered under Schedule 1 of the New South Wales Threatened Species Conservation Act 1995; it is not listed under Federal legislation. Plants are known to occur in Tuggolo Creek and Back River Nature Reserves, Tuggolo State Forest and the area above Dungowan Dam which is managed by local government and under some protection as a water catchment area (Fig. 1). After visits to each of the three sites, the extent of each population was found to be small, and where population size data was recorded with herbarium specimens, it was noted to be between one and 20 individuals. Etymology: The epithet honours Doug Beckers (NSW National Parks and Wildlife officer) for discovering the species. Key to the species and subspecies of Asterolasia found in eastern Australia (SA, Vic., NSW, Qld) Note: Of the taxa found in eastern Australia only A. asteriscophora subsp. albiflora (E Vic.; couplet 6), A. muricata (SA; couplet 1), A. phebalioides (SA, W Vic.; couplet 13) do not occur in NSW. All Western Australian species have 1-4 carpels and a key to these species is provided by Wilson (2013). The couplets leading to the subspecies of A. trymalioides are based on the key of McDougall et al. (2016).

Research paper thumbnail of AusTraits, a curated plant trait database for the Australian flora

Scientific Data

We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Aus... more We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 448 traits across 28,640 taxa from field campaigns, published literature, taxonomic monographs, and individual taxon descriptions. Traits vary in scope from physiological measures of performance (e.g. photosynthetic gas exchange, water-use efficiency) to morphological attributes (e.g. leaf area, seed mass, plant height) which link to aspects of ecological variation. AusTraits contains curated and harmonised individual- and species-level measurements coupled to, where available, contextual information on site properties and experimental conditions. This article provides information on version 3.0.2 of AusTraits which contains data for 997,808 trait-by-taxon combinations. We envision AusTraits as an ongoing collaborative initiative for easily archiving and sharing trait data, which also provides a template for other nationa...

Research paper thumbnail of A reassessment of 'Boronia' (Rutaceae) in the Northern Territory with a key to species, the description of one new species and the reduction, in synonymy, of another species

The Beagle : Records of the Museums and Art Galleries of the Northern Territory

Research paper thumbnail of Phebalium cicatricatum (Rutaceae), a newly described and Critically Endangered species from north-eastern Queensland, Australia

Telopea

Phebalium cicatricatum A.J.Ford & Duretto is formally described and illustrated. Notes on habitat... more Phebalium cicatricatum A.J.Ford & Duretto is formally described and illustrated. Notes on habitat, distribution and conservation status are provided, as are detailed information how to distinguish it from P. longifolium, the only other species of the genus in the Wet Tropics area of north-eastern Queensland, and the pink-flowered P. nottii. A key to the species of Phebalium found in Queensland is provided.

Research paper thumbnail of Zieria fordii and Z. wilhelminae (Rutaceae), two new and restricted Queensland species segregated from the morphologically similar and widespread Z. cytisoides

Telopea

Zieria fordii and Z. wilhelminae (Rutaceae), two new and restricted Queensland species segregated... more Zieria fordii and Z. wilhelminae (Rutaceae), two new and restricted Queensland species segregated from the morphologically similar and widespread Z. cytisoides.

Research paper thumbnail of New subspecies for the south-western Australian species Boronia clavata and B. denticulata (Rutaceae)

Telopea

e southwestern Australian species Boronia clavata Paul G.Wilson and B. denticulata Sm. (Rutaceae)... more e southwestern Australian species Boronia clavata Paul G.Wilson and B. denticulata Sm. (Rutaceae) are revised and B. clavata subsp. grandis Duretto from Cape Arid National Park and B. denticulata subsp. whoogarupensis Duretto from in and near western Fitzgerald River National Park are newly described.

Research paper thumbnail of Leionema praetermissum (Rutaceae), a new restricted endemic for New South Wales

Telopea

Leionema praetermissum P.R.Alvarez & Duretto (Rutaceae), previously called L. sp. Colo River (P.H... more Leionema praetermissum P.R.Alvarez & Duretto (Rutaceae), previously called L. sp. Colo River (P.H.Weston 2423), is here formally described. is rare species is found in Wollemi National Park in the Central Coast Region of New South Wales, Australia. We present information on its distribution, conservation status and an updated key to the genus Leionema for New South Wales and southeast Queensland.

Research paper thumbnail of Historical biogeography of Melicope (Rutaceae) and its close relatives with a special emphasis on Pacific dispersals

Journal of Systematics and Evolution

The genus Melicope (Rutaceae) occurs on most Pacific archipelagos and is perfectly suited to stud... more The genus Melicope (Rutaceae) occurs on most Pacific archipelagos and is perfectly suited to study Pacific biogeography. The main goal was to infer the age, geographic origin and colonization patterns of Melicope and its relatives. We sequenced three nuclear and two plastid markers for 332 specimens that represent 164 species in 16 genera of Rutaceae. Phylogenetic reconstruction, molecular dating, ancestral area reconstruction and diversification analyses were carried out. The two main clades (Acronychia-Melicope and Euodia) originated in Australasia and their crown ages are dated to the Miocene. Diversification rates differed among the subclades and were lowest in the Euodia lineage and highest in the Hawaiian Melicope lineage. The Malagasy and Mascarene species form a clade, which split from its SE Asian relatives in the Pliocene/Pleistocene. At least eight colonizations to the Pacific islands occurred. The timing of all colonizations except for the Hawaiian group is congruent with age of the island ages. Australia, New Guinea and New Caledonia have been the source of colonizations into the Pacific islands in the Melicope clade. Melicope shows high dispersability and has colonized remote archipelagos such as the Austral and Marquesas Islands each twice. Colonization of islands of the Hawaiian-Emperor seamount chain likely predates the ages of the current main islands, and the initial colonization to Kaua'i occurred after the splitting of the Hawaiian lineage into two subclades. Wider ecological niches and adaptations to bird-dispersal likely account for the much higher species richness in the Acronychia-Melicope clade compared to the Euodia clade.

Research paper thumbnail of Phylogenetic analysis of Zieria (Rutaceae) in Australia and New Caledonia based on nuclear ribosomal DNA shows species polyphyly, divergent paralogues and incongruence with chloroplast DNA

Australian Systematic Botany

This study presents a phylogeny of Zieria Sm. (Rutaceae) based on sequences of internal transcrib... more This study presents a phylogeny of Zieria Sm. (Rutaceae) based on sequences of internal transcribed spacer and external transcribed spacer regions of nrDNA, and using Neobyrnesia suberosa J.A.Armstr. as the outgroup. The phylogeny includes 109 samples, representing 58 of the 60 currently recognised species of Zieria, with multiple accessions of most. Ten species were resolved as monophyletic on the basis of two, or in one case four, samples. Monophyly of four species was neither supported nor rejected, and all other species with more than one accession were resolved as polyphyletic or paraphyletic. Results showed that divergent paralogues of nrDNA are present in some individuals, although the underlying evolutionary process that gave rise to those paralogues is uncertain. Divergent paralogues within genomes could predate speciation and be variably retained or variably detected within the species sampled here; alternatively, they could represent novel nrDNA combinations formed throug...

Research paper thumbnail of A cladistic and biogeographical analysis of Boronia Sm. section Valvatae (Benth.) Engl. (Rutaceae)

Research paper thumbnail of Morphological Variation within the Boronia grandisepala Group (Rutaceae) and the Description of Nine Taxa Endemic to the Northern Territory, Australia

Aust Systematic Botany, 1997

Within Boronia Sm. section Valvatae (Benth.) Engl. the B. grandisepala F.Muell. species group is ... more Within Boronia Sm. section Valvatae (Benth.) Engl. the B. grandisepala F.Muell. species group is characterised by a calyx as large or larger than the corolla, simple leaves, and multiangular stellate hairs. The group includes B. grandisepala, a related complex of species, and six newly described species: B. amplectens Duretto, B. quadrilata Duretto, B. suberosa Duretto, B. verecunda Duretto, B. viridiflora Duretto and B. xanthastrum Duretto. All taxa are endemic to the Northern Territory. A phenetic analysis using clustering techniques and multidimensional scaling was used to define taxa within the B. grandisepala species complex. Four taxa were recognised in the complex and three, B. grandisepala subsp. acanthophida Duretto, B. laxa Duretto, and B. prolixa Duretto, are described here. Boronia grandisepala is lectotypified. A key to the species is provided. High levels of diversity and endemism in the flora of the western portion of the Arnhem Land plateau are discussed.

Research paper thumbnail of Transfer of the New Caledonian genus Boronella to Boronia (Rutaceae) based on analyses of cpDNA and nrDNA

Australian Systematic Botany, 2015

As currently circumscribed, Boronia (Rutaceae) is a large Australian genus of 148 species distrib... more As currently circumscribed, Boronia (Rutaceae) is a large Australian genus of 148 species distributed in all states and mainland territories, and Boronella is confined to New Caledonia and contains ~four species. We present molecular phylogenetic analyses of these genera, based on chloroplast (trnL–trnF) and nuclear (ITS, ETS) DNA sequences, to assess their relationships and infrageneric classification. Analyses strongly support the monophyly of a Boronia+Boronella clade and that Boronella is nested within Boronia. They also support the monophyly of Boronella and Boronia sections Algidae, Valvatae and Cyanothamnus, and ser. Pedunculatae (sect. Boronia), but resolve sect. Boronia and ser. Boronia as polyphyletic. On the basis of these results, we propose a new classification wherein Boronella is transferred to Boronia and recognised at the rank of section, and a new name and two new combinations in Boronia are provided for the following three species: Boronia hartleyi Duretto & Bayly...

Research paper thumbnail of Nuytsia Four new species of Boronia (Rutaceae) from the Kimberley region of Western Australia

All of these species have very restricted distributions and are of conservation concern. All new ... more All of these species have very restricted distributions and are of conservation concern. All new species are illustrated. A revised key to Boronia species in the Kimberley region is provided. Boronia kalumburuensis was recognised by Duretto (1997) based on a small number of collections from around Kalumburu and Theda Station. It is placed in Boronia subser. Filicifoliae Duretto (ser. Lanuginosae) which currently contains four other described species, viz. B. barrettiorum Duretto, B. filicifolia A.Cunn. ex Benth., B. minutipinna Duretto and B. pauciflora (Duretto 1999; Duretto et al. 2013). Other Kimberley species from ser. Lanuginosae are B. jucunda Duretto (subser. Jucundae Duretto), B. lanuginosa Endl. and B. wilsonii (subser. Lanuginosae). Further fieldwork in the region has provided additional collections of B. kalumburuensis s. lat. from known locations, as well as new populations from the King Edward River to Lawley River and Prince Regent River. These additional populations each have their own unique characteristics, requiring a reassessment of species boundaries in B. kalumburuensis and B. wilsonii. Careful study of these populations has concluded that three taxa should be recognised at species rank from B. kalumburuensis s. lat. and we describe B.

Research paper thumbnail of Nuytsia Taxonomic notes on Boronia species of north-western Australia, including a revision of the Boronia lanuginosa group(Boronia section Valvatae: Rutaceae)

M.F. Duretto. Taxonomic notes on Boronia species of northwestern Australia, including a revision ... more M.F. Duretto. Taxonomic notes on Boronia species of northwestern Australia, including a revision of the Boronia lanuginosa group (Boronia section Valvatae: Rutaceae). Nuytsia 11(3): 301-346 (1997). The revision of Boronia (Rutaceae) in the Northern Territory, the Kimberley Region of Western Australia, and northwestern Queensland is completed, and a key to all species is provided. The B. lanuginosa Endl. species group is characterized as those species with pinnate leaves, a calyx as large as or larger than the corolla, multiangular stellate hairs, and a pronounced ridge on the micropylar side of the seed. This clade comprises the B. lanuginosa species complex, B. filicifolia A. Cunn. ex Benth., B. pauciflora W. Fitzg. and five newly described species: viz. B. decumbens Duretto, B. minutipinna Duretto, B. kalumburuensis Duretto, B. jucunda Duretto and B. tolerans Duretto. The B. lanuginosa species complex has four available names and was analysed numerically using phenetic methods. Two taxa were identified in the analysis. Boronia artemisiifolia var. wilsonii F. Muell. ex Benth. is raised to specific status while B. affinis R. Br. ex Benth. and B. artemisiifolia F. Muell. are synonymized under B. lanuginosa. Additionally, B. rupicola Duretto is described, and B. filicifolia, B. lanceolata F. Muell., B. lanuginosa and B. pauciflora are lectotypified. Boronia lanuginosa species complex Endlicher (1837) described B. lanuginosa from material that was collected by Ferdinand Bauer and labelled King George's Sound. King George Sound is in southwestern Australia, but Bauer had travelled with Matthew Flinders, on the "Investigator", around northern Australia (see Specht 1958a,b; Wilson 1975). Bentham (1863), who had not seen the type material of B. lanuginosa, applied this name to a southwestern Western Australian species that is found growing around King George Sound (Wilson 1975). Later, Mueller (1859) described B. artemisiifolia (as B. artemisifolia) from material he collected while on Gregory's Northern Australian Expedition. Bentham (1863) used this later name (written as B. artemisiaefolia) in his "Flora Australiensis". Subsequently, and up until 1975, specimens of Boronia from northern Australia that had a dense indumentum, pinnate leaves and a large calyx have been called B. artemisiifolia, with orthographic variation. After studying type material of B. lanuginosa, Wilson (1975) realized Bentham's error and synonymized B. artemisiifolia with B. lanuginosa. He concluded that the type locality of B. lanuginosa was somewhere on the coast of Arnhem Land where Flinders'ship "The Investigator" had travelled on its second voyage. Robert Brown, who was on "The Investigator" with Bauer and Flinders, collected plant specimens from the islands of the Gulf of Carpentaria that are identical to the type material of B. lanuginosa (Wilson pers. comm.), strengthening Wilson's argument. The southwestern Western Australian species that had previously been called B. lanuginosa is now known as B. stricta Bartl. (Wilson 1975). Bentham (1863) described B. affinis, B. filicifolia and B. artemisiifolia var. wilsonii (presently synonymized under B. lanuginosa) from northwestern Australia. The type material of B. affinis ("N. Australia. Islands of the Gulf of Carpentaria, and mainland opposite Groote Eylandt") was collected by Robert Brown while travelling with Matthew Flinders and Ferdinand Bauer on "The Investigator" in 1802-03. The main feature that has been used to distinguish B. affinis from B. lanuginosa is that B. affinis is glabrous or has a sparse indumentum while B. lanuginosa has a dense indumentum. There is much confusion surrounding the application of these two names. Judging from present herbarium records and collections, B. affinis and B. lanuginosa are sympatric in the Northern Territory. Boronia affinis is considered to be rare, possibly endangered, and confined to the Northern Territory (Briggs & Leigh 1988 [not listed in Briggs & Leigh 1996]; Hnatiuk 1990) while B. lanuginosa (as currently circumscribed) is common and widespread from King Sound (WA) to Wollogorang Station (NT) (Figure 1). Boronia lanuginosa has an ontogenetic sequence in leaf development from glabrous leaves, or leaves with a sparse simple and stellate indumentum, to leaves having a dense stellate indumentum, as has been observed in other members of section

Research paper thumbnail of New subspecies of Leionema bilobum (Rutaceae)

Morphological variation in Leionema bilobum (Lindl.) Paul G. Wilson is described taxonomically as... more Morphological variation in Leionema bilobum (Lindl.) Paul G. Wilson is described taxonomically as four subspecies: viz. subsp. bilobum, which is restricted to the eastern ranges of Grampians National Park, Victoria; subsp. thackerayense Duretto & K.L.Durham subsp. nov., which is restricted to the Victoria Range, Grampians National Park, and the nearby Black Range, Victoria; subsp. truncatum (Hook.f) Duretto & K.L.Durham stat. et comb. nov., which is endemic to Tasmania; and subsp. serrulatum (F.Muell.) Duretto & K.L.Durham stat. et comb. nov., which is restricted to the Eastern and Gippsland Highlands, Victoria. A key is provided and all subspecies are illustrated.

Research paper thumbnail of Boronia barrettiorum (Boronia subseries Filicifoliae : Rutaceae), a new species from the Kimberley Region of north-western Australia

Duretto, M.F. Boronia barrettiorum ( Boronia subseries Filicifoliae : Rutaceae), a new species fr... more Duretto, M.F. Boronia barrettiorum ( Boronia subseries Filicifoliae : Rutaceae), a new species from the Kimberley Region of north-western Australia. Nuytsia 16(1): 15-20 (2006). Boronia barrettiorum Duretto sp. nov. ( Boronia subseries Filicifoliae : Rutaceae) is described and its relationships discussed. Variation in B. pauciflora W.Fitz. is also discussed and a key to the species of Boronia found in the Kimberley Region is provided. The Kimberley Region of northern Western Australia is a minor centre of endemism for Boronia. Wheeler (1992), in the first regional account of the genus, illustrated and gave accounts for four species (B. filicifolia A.Cunn. ex Benth., B. lanuginosa Endl., B. pauciflora W.Fitz. and B. sp. A). Wheeler also discussed a number of taxonomic problems. A phenetic analysis of the B. lanuginosa species-complex (Duretto 1997) identified two widespread species, B. lanuginosa and B. wilsonii (F.Muell. ex Benth.) Duretto (both found in the Kimberley Region and the...

Research paper thumbnail of Boronia (Rutaceae) is polyphyletic: Reinstating Cyanothamnus and the problems associated with inappropriately defined outgroups

Research paper thumbnail of Hibbertia fumana (Dilleniaceae), a species presumed to be extinct rediscovered in the Sydney region, Australia

Telopea

Hibbertia fumana Sieber ex Toelken (Dilleniaceae), a species thought to be extinct, was rediscove... more Hibbertia fumana Sieber ex Toelken (Dilleniaceae), a species thought to be extinct, was rediscovered during routine botanical surveys in western Sydney. A revised description, including for the first time that of fruit and seed, is provided along with ecological notes, an illustration, and a photograph.

Research paper thumbnail of Boronia hapalophylla (Rutaceae), a new and restricted species from north-eastern New

Wales, is newly described and illustrated, and notes on its relationships are given.

Research paper thumbnail of A reassessment of Asterolasia correifolia (Rutaceae) with descriptions of the newly recognised A. exasperata and A. sola

Telopea

A reassessment of Asterolasia correifolia (Rutaceae), with descriptions of the newly recognised A... more A reassessment of Asterolasia correifolia (Rutaceae), with descriptions of the newly recognised A. exasperata and A. sola.

Research paper thumbnail of Asterolasia beckersii (Rutaceae), a new species from the Northern Tablelands, New South Wales

Telopea

Asterolasia beckersii Orme & Duretto (Rutaceae) is newly described. The species is restricted to ... more Asterolasia beckersii Orme & Duretto (Rutaceae) is newly described. The species is restricted to the Nundle area (Tamworth district) on the Northern Tablelands of New South Wales. The species is related to A. correifolia (A.Juss.) Benth. and A. hexapetala (A.Juss.) Druce and can be distinguished from these by leaf, inflorescence and floral characters. The ecology and conservation status of A. beckersii are discussed and a key to Asterolasia for eastern Australia is provided. Orme and Duretto Conservation status: In 2004, this species was determined to be Endangered under Schedule 1 of the New South Wales Threatened Species Conservation Act 1995; it is not listed under Federal legislation. Plants are known to occur in Tuggolo Creek and Back River Nature Reserves, Tuggolo State Forest and the area above Dungowan Dam which is managed by local government and under some protection as a water catchment area (Fig. 1). After visits to each of the three sites, the extent of each population was found to be small, and where population size data was recorded with herbarium specimens, it was noted to be between one and 20 individuals. Etymology: The epithet honours Doug Beckers (NSW National Parks and Wildlife officer) for discovering the species. Key to the species and subspecies of Asterolasia found in eastern Australia (SA, Vic., NSW, Qld) Note: Of the taxa found in eastern Australia only A. asteriscophora subsp. albiflora (E Vic.; couplet 6), A. muricata (SA; couplet 1), A. phebalioides (SA, W Vic.; couplet 13) do not occur in NSW. All Western Australian species have 1-4 carpels and a key to these species is provided by Wilson (2013). The couplets leading to the subspecies of A. trymalioides are based on the key of McDougall et al. (2016).

Research paper thumbnail of AusTraits, a curated plant trait database for the Australian flora

Scientific Data

We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Aus... more We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 448 traits across 28,640 taxa from field campaigns, published literature, taxonomic monographs, and individual taxon descriptions. Traits vary in scope from physiological measures of performance (e.g. photosynthetic gas exchange, water-use efficiency) to morphological attributes (e.g. leaf area, seed mass, plant height) which link to aspects of ecological variation. AusTraits contains curated and harmonised individual- and species-level measurements coupled to, where available, contextual information on site properties and experimental conditions. This article provides information on version 3.0.2 of AusTraits which contains data for 997,808 trait-by-taxon combinations. We envision AusTraits as an ongoing collaborative initiative for easily archiving and sharing trait data, which also provides a template for other nationa...

Research paper thumbnail of A reassessment of 'Boronia' (Rutaceae) in the Northern Territory with a key to species, the description of one new species and the reduction, in synonymy, of another species

The Beagle : Records of the Museums and Art Galleries of the Northern Territory

Research paper thumbnail of Phebalium cicatricatum (Rutaceae), a newly described and Critically Endangered species from north-eastern Queensland, Australia

Telopea

Phebalium cicatricatum A.J.Ford & Duretto is formally described and illustrated. Notes on habitat... more Phebalium cicatricatum A.J.Ford & Duretto is formally described and illustrated. Notes on habitat, distribution and conservation status are provided, as are detailed information how to distinguish it from P. longifolium, the only other species of the genus in the Wet Tropics area of north-eastern Queensland, and the pink-flowered P. nottii. A key to the species of Phebalium found in Queensland is provided.

Research paper thumbnail of Zieria fordii and Z. wilhelminae (Rutaceae), two new and restricted Queensland species segregated from the morphologically similar and widespread Z. cytisoides

Telopea

Zieria fordii and Z. wilhelminae (Rutaceae), two new and restricted Queensland species segregated... more Zieria fordii and Z. wilhelminae (Rutaceae), two new and restricted Queensland species segregated from the morphologically similar and widespread Z. cytisoides.

Research paper thumbnail of New subspecies for the south-western Australian species Boronia clavata and B. denticulata (Rutaceae)

Telopea

e southwestern Australian species Boronia clavata Paul G.Wilson and B. denticulata Sm. (Rutaceae)... more e southwestern Australian species Boronia clavata Paul G.Wilson and B. denticulata Sm. (Rutaceae) are revised and B. clavata subsp. grandis Duretto from Cape Arid National Park and B. denticulata subsp. whoogarupensis Duretto from in and near western Fitzgerald River National Park are newly described.

Research paper thumbnail of Leionema praetermissum (Rutaceae), a new restricted endemic for New South Wales

Telopea

Leionema praetermissum P.R.Alvarez & Duretto (Rutaceae), previously called L. sp. Colo River (P.H... more Leionema praetermissum P.R.Alvarez & Duretto (Rutaceae), previously called L. sp. Colo River (P.H.Weston 2423), is here formally described. is rare species is found in Wollemi National Park in the Central Coast Region of New South Wales, Australia. We present information on its distribution, conservation status and an updated key to the genus Leionema for New South Wales and southeast Queensland.

Research paper thumbnail of Historical biogeography of Melicope (Rutaceae) and its close relatives with a special emphasis on Pacific dispersals

Journal of Systematics and Evolution

The genus Melicope (Rutaceae) occurs on most Pacific archipelagos and is perfectly suited to stud... more The genus Melicope (Rutaceae) occurs on most Pacific archipelagos and is perfectly suited to study Pacific biogeography. The main goal was to infer the age, geographic origin and colonization patterns of Melicope and its relatives. We sequenced three nuclear and two plastid markers for 332 specimens that represent 164 species in 16 genera of Rutaceae. Phylogenetic reconstruction, molecular dating, ancestral area reconstruction and diversification analyses were carried out. The two main clades (Acronychia-Melicope and Euodia) originated in Australasia and their crown ages are dated to the Miocene. Diversification rates differed among the subclades and were lowest in the Euodia lineage and highest in the Hawaiian Melicope lineage. The Malagasy and Mascarene species form a clade, which split from its SE Asian relatives in the Pliocene/Pleistocene. At least eight colonizations to the Pacific islands occurred. The timing of all colonizations except for the Hawaiian group is congruent with age of the island ages. Australia, New Guinea and New Caledonia have been the source of colonizations into the Pacific islands in the Melicope clade. Melicope shows high dispersability and has colonized remote archipelagos such as the Austral and Marquesas Islands each twice. Colonization of islands of the Hawaiian-Emperor seamount chain likely predates the ages of the current main islands, and the initial colonization to Kaua'i occurred after the splitting of the Hawaiian lineage into two subclades. Wider ecological niches and adaptations to bird-dispersal likely account for the much higher species richness in the Acronychia-Melicope clade compared to the Euodia clade.

Research paper thumbnail of Phylogenetic analysis of Zieria (Rutaceae) in Australia and New Caledonia based on nuclear ribosomal DNA shows species polyphyly, divergent paralogues and incongruence with chloroplast DNA

Australian Systematic Botany

This study presents a phylogeny of Zieria Sm. (Rutaceae) based on sequences of internal transcrib... more This study presents a phylogeny of Zieria Sm. (Rutaceae) based on sequences of internal transcribed spacer and external transcribed spacer regions of nrDNA, and using Neobyrnesia suberosa J.A.Armstr. as the outgroup. The phylogeny includes 109 samples, representing 58 of the 60 currently recognised species of Zieria, with multiple accessions of most. Ten species were resolved as monophyletic on the basis of two, or in one case four, samples. Monophyly of four species was neither supported nor rejected, and all other species with more than one accession were resolved as polyphyletic or paraphyletic. Results showed that divergent paralogues of nrDNA are present in some individuals, although the underlying evolutionary process that gave rise to those paralogues is uncertain. Divergent paralogues within genomes could predate speciation and be variably retained or variably detected within the species sampled here; alternatively, they could represent novel nrDNA combinations formed throug...

Research paper thumbnail of A cladistic and biogeographical analysis of Boronia Sm. section Valvatae (Benth.) Engl. (Rutaceae)

Research paper thumbnail of Morphological Variation within the Boronia grandisepala Group (Rutaceae) and the Description of Nine Taxa Endemic to the Northern Territory, Australia

Aust Systematic Botany, 1997

Within Boronia Sm. section Valvatae (Benth.) Engl. the B. grandisepala F.Muell. species group is ... more Within Boronia Sm. section Valvatae (Benth.) Engl. the B. grandisepala F.Muell. species group is characterised by a calyx as large or larger than the corolla, simple leaves, and multiangular stellate hairs. The group includes B. grandisepala, a related complex of species, and six newly described species: B. amplectens Duretto, B. quadrilata Duretto, B. suberosa Duretto, B. verecunda Duretto, B. viridiflora Duretto and B. xanthastrum Duretto. All taxa are endemic to the Northern Territory. A phenetic analysis using clustering techniques and multidimensional scaling was used to define taxa within the B. grandisepala species complex. Four taxa were recognised in the complex and three, B. grandisepala subsp. acanthophida Duretto, B. laxa Duretto, and B. prolixa Duretto, are described here. Boronia grandisepala is lectotypified. A key to the species is provided. High levels of diversity and endemism in the flora of the western portion of the Arnhem Land plateau are discussed.

Research paper thumbnail of Transfer of the New Caledonian genus Boronella to Boronia (Rutaceae) based on analyses of cpDNA and nrDNA

Australian Systematic Botany, 2015

As currently circumscribed, Boronia (Rutaceae) is a large Australian genus of 148 species distrib... more As currently circumscribed, Boronia (Rutaceae) is a large Australian genus of 148 species distributed in all states and mainland territories, and Boronella is confined to New Caledonia and contains ~four species. We present molecular phylogenetic analyses of these genera, based on chloroplast (trnL–trnF) and nuclear (ITS, ETS) DNA sequences, to assess their relationships and infrageneric classification. Analyses strongly support the monophyly of a Boronia+Boronella clade and that Boronella is nested within Boronia. They also support the monophyly of Boronella and Boronia sections Algidae, Valvatae and Cyanothamnus, and ser. Pedunculatae (sect. Boronia), but resolve sect. Boronia and ser. Boronia as polyphyletic. On the basis of these results, we propose a new classification wherein Boronella is transferred to Boronia and recognised at the rank of section, and a new name and two new combinations in Boronia are provided for the following three species: Boronia hartleyi Duretto & Bayly...