Taxonomic revision of African Psoralea pinnata species complex (Psoraleeae, Leguminosae) (original) (raw)
Related papers
PhytoKeys, 2015
Citation: Bello A, Stirton CH, Chimphango SBM, Muasya AM (2015) Psoralea diturnerae and P. vanberkelae (Psoraleeae, Fabaceae): two new species restricted to the Core Cape Region of South Africa. PhytoKeys 44 : 97 -107 . Abstract Two new species of Psoralea L. are described: Psoralea diturnerae A. Bello, C.H. Stirt. & Muasya, sp. nov . and P. vanberkelae C.H. Stirt., A. Bello & Muasya, sp. nov .
PhytoKeys, 2011
Citation: Stirton CH, Clark VR, Barker NP, Muasya AM (2011) Psoralea margaretiflora (Psoraleeae, Fabaceae): A new species from the Sneeuberg Centre of Floristic Endemism, Eastern Cape, South Africa. PhytoKeys 5: 31-38.
PhytoKeys, 2018
C.H.Stirt., A.Bello & Muasya is a new species of Psoraleeae, Fabaceae. is endemic to the Swartberg Mountains and is a tall densely branched re-sprouting shrub up to 2.5 m, with bluish-green stems and with most parts covered in small crater-like glands, leaves pinnately 3-foliolate, linear-oblong, pale bluish-green, semi-conduplicate, somewhat succulent, glabrous, crowded at the end of bare branches on older stems or distributed along short branches on young shoots, petiolate. A description of , together with photographs and a distribution map are presented.
Systematic studies of the southern African Psoraleoid legumes
2010
to whom I am very grateful. I am also grateful to Professor C. H. Stirton, who provided mentorship and intellectual guidance throughout this project. He was always willing to share his wealth of experience in the field, the herbarium and the laboratory. Special thanks to the technical officers of the Botany Department for assistance with research equipment and facilities. I would also like to thank the curators of the following Herbaria: BOL, NBG and PRE for allowing me access to their specimen collections. I also wish to thank Mr. S. C. Power for the assistance he rendered during the collection of soil samples and the analysis of their nutritional content. My family and friends provided moral support and upliftment during times when things seemed not to work out, and they were always there to say I can do it. Without them, I could not have reached this far. Research funds for this project came from the SANBI Threatened Species Programme (TSP) and the South African Biosytematics Initiative (SABI). Tuition and living costs were covered through funding from the UCT International Student Scholarship, a top up bursary from my supervisor: Dr. A. M. Muasya, the Dorothy Cameroon Scholarship, the Canon Collins Trust, and the University of Swaziland.
International Journal of Plant Sciences, 2014
Premise of research. Gilbertiodendron is a genus endemic to Africa with ∼30 species made up of trees of primary dry-land, riverine, and gallery forests. Recently, the west and central African monotypic genus Pellegriniodendron was merged into Gilbertiodendron. Gilbertiodendron is one of 17 genera that form the exclusively African Berlinia clade, and this study presents the findings of a phylogenetic analysis designed to evaluate the generic limits of Gilbertiodendron and its relationships within the Berlinia clade. Methodology. To test the monophyly of Gilbertiodendron and its relationships with other genera, we analyzed nucleotide sequence data from the nuclear ribosomal internal transcribed spacer and the plastid trnL intron and trnL-F intergenic spacer, using parsimony and Bayesian analyses. Pivotal results. Gilbertiodendron is recovered as monophyletic, including all the samples previously recognized as Pellegriniodendron diphyllum. Conclusions. The placement of Pellegriniodendron in synonymy with Gilbertiodendron is supported by our results. Our analyses suggest that G. diphyllum is the same taxon on both sides of the Dahomey Gap. The G. ogoouense complex is a monophyletic group of species that needs a new taxonomic framework and within which several new species will be described. The phylogenetic framework presented here and the ongoing taxonomic revision should provide the baseline data required for adequate assessment of this group of tree species, of which only eight have been assessed under the International Union for Conservation of Nature's Red List criteria.
Molecular Phylogenetics and Evolution, 2008
The impact of including insertion/deletion events as phylogenetic characters was explored within North American Psoraleeae (Leguminosae). This comprehensive analysis of the impact of gap character incorporation spanned four different indel coding schemes, gaps coded as missing characters, simple binary characters, multi-state characters, and as a 5th state, across two optimality criteria: maximum parsimony and Bayesian Inference. Two nuclear (ITS and Waxy) and six chloroplast (trnS/G, trnL/F, trnK, matK, trnD/T, and rpoB-trnC) DNA regions were sequenced from 43 species of North American Psoraleeae as the foundation of the study. Our results suggest that gaps can provide a substantial percentage of informative characters and can increase phylogenetic resolution and nodal branch support. Phylogenetic signal within indels was higher in chloroplast regions relative to nuclear regions, demonstrating their inclusion as especially important in chloroplast-based phylogenetic studies. Phylogenetic analysis of generic relationships within Psoraleeae is largely congruent with that proposed by Grimes (1990) with a few exceptions. New World species are supported as a monophyletic group. Our analyses suggest that Otholobium may need to be split into two genera and that Psoralidium is polyphyletic and will require movement of Psoralidium tenuiflorum to Pediomelum.
South African Journal of Botany, 2012
Psophocarpus Neck. ex DC. (Leguminosae; Papilionoideae) is a genus of eight tropical African legume species and with a single cultivated Asian species P. tetragonolobus or the winged bean. Current increasing interest in the use of wild relatives as a source of adaptive traits for breeding has lead to an attempt to clarify the phylogenetic relationships within the genus. To test the monophyly of Psophorcarpus, a cladistics analysis was undertaken based on morphological characters recorded from herbarium specimens representing the nine species of Psophocapus with species of three related genera, Vigna, Otoptera and Dysolobium, as outgroups. The results indicated that the genus Psophocarpus is monophyletic and the nine species resolved into four subclades: subgen. Psophocarpus sect. Psophocarpus (P. palustris, P. tetragonolobus and P. scandens); subgen. Psophocarpus sect. Vignopsis (P. lancifolius and P. lukafuensis); subgen. Lophostigma (P. obovalis, P. monophyllus and P. lecomtei); and a new subgen. Longipedunculares (P. grandiflorus) which is herein proposed.