Soella (Marchantiophyta: Lejeuneaceae), a new genus from China and Japan (original) (raw)
Related papers
Organisms Diversity & Evolution, 2015
Examination of type specimens and additional vouchers has revealed that the African Taxilejeunea pulchriflora and the tropical Asian Lejeunea propagulifera and Lejeunea tamaspocsii show considerable morphological overlap; however, morphological similarity does not necessarily indicate genetic similarity. Thus, sequences of two chloroplast regions (trnL-trnF, rbcL) and the nuclear ribosomal ITS region were generated from accessions of these taxa from Tanzania, Ethiopia, Thailand, Malaysia, and the Fiji Islands and integrated into an existing Lejeunea dataset. Phylogenetic analyses of the three-marker dataset resolved the three taxa in a robust monophyletic lineage and indicated relationships to Neotropical and Holarctic species. Based on the morphological similarities and the low molecular variation of the investigated accessions, we consider the three taxa as conspecific and propose two synonyms and a new combination, Lejeunea pulchriflora. Lejeunea pulchriflora is characterized by its asymmetrical leaf lobes, small, distant underleaves, toothed perianth keels, and autoicy and ranges from tropical Africa to the Pacific region.
Polish Botanical Journal, 2015
Drepanolejeunea pleiodictya Herzog (Lejeuneaceae), a rare and poorly known species from Java and Malaysia, was newly discovered in tropical montane forest in southern Thailand. It is distinguished by the ventral margin of the leaf lobe being usually irregularly dentate with one large tooth, the apex of the lobule having a straight or slightly curved tooth, ocelli 3−4(−5) seriate in the leaf lobe separated by 2−5 ordinary leaf cells, and gynoecia usually with a single pycnolejeuneoid innovation. This species is described and illustrated in detail, and its diagnostic characters and geographical distribution are briefly discussed.
Taxon, 2010
Phylogenetic analyses of liverworts using chloroplast rbeL and rps4 sequences were performed with special reference to the enigmatic thalloid liverwort, Mizutania rieeardioides. The results showed that Mizutania is nested within leafy liverwort family Calypogeiaceae (subclass Jungermanniidae), thereby refuting the traditional interpretation that Mizutania is a member of the simple thalloid liverworts (subclass Metzgeriidae) related to Aneuraceae. Male plants with three ranked bracts, which are newly discovered in this study, also show a close morphological affinity to those ofleafy liverworts. Parallel evolution ofthe flattened gametophyte seems to have occurred sporadically in the Jungermanniidae in association with adaptation to prostrate growth on the ground or on living leaves. The unistratose thalloid features of Mizutania are interpreted as an extremely reduced or highly specialized form of a creeping leafy liverwort. The rudimentary sexual branches which develop on the margins of the thallus are similar in many characteristics to those ofCalypogeiaceae. We reduce the monotypic family Mizutaniaceae to a synonym of Calypogeiaceae.
Cryptogamie, Bryologie, 2015
Cheilolejeuneinae is an early diverging lineage of Lejeuneaceae tribe Lejeuneeae with a pantropical distribution. The current phylogeny and classification of this subtribe is based on morphological and limited-sampling molecular studies. Here we present a molecular phylogeny of Cheilolejeuneinae and related lineages based on maximum parsimony and maximum likelihood analyses, as well as Bayesian inference of two chloroplast regions (trnL-f, trnG) and the nuclear ribosomal ITS1-5.8S-ITS2 region, to test the monophyly of this subtribe, and to re-evaluate the infrageneric classification of Cheilolejeunea. The results confirm the monophyly of Cheilolejeuneinae, which consists of one single genus, Cheilolejeunea. aureolejeunea and omphalanthus are nested in Cheilolejeunea and, consequently, all species (11) and varieties (2) accepted in these two genera are transferred to Cheilolejeunea. Based on morphological and molecular evidence a new infrageneric classification of Cheilolejeunea into nine sections is proposed: sect. anomalolejeunea, sect. Cheilolejeunea, sect. Cyrtolejeunea, sect. euosmolejeunea, sect. Leucolejeunea, sect. paroicae, sect. omphalanthus, sect. Strepsilejeunea and sect. Xenolejeunea. Cheilolejeunea decurviloba is resolved in a sister relationship to pycnolejeunea densistipula and C. gaoi constitues a separate lineage remote from Cheilolejeuneinae.
Towards a monophyletic classification of Lejeuneaceae V: the systematic position of Pictolejeunea
Phytotaxa, 2016
Lejeuneaceae are the most species rich family of leafy liverworts and arguably the most difficult group in terms of generic delimitation. Although much progress has been made in recent years, the generic classification of Lejeuneaceae has not yet been satisfactorily solved. Here, we present phylogenetic analyses of a three marker dataset (nrITS, cp DNA rbcL and trnL-trnF) derived from 113 accessions of Lejeuneeae and 13 outgroup species. Based on maximum parsimony analyses and Bayesian inference of phylogeny, we propose the new subtribes Pycnolejeuneinae and Xylolejeuneinae, reinstate the genera Cystolejeunea and Cyrtolejeunea, and transfer Otolejeunea from Cyclolejeuneinae to Lepidolejeuneinae.
2013
Dactylophorella muricata (Gottsche) R. M. Schust. is reported as a genus and species record new to liverwort flora of Taiwan. Dactylophorella R. M. Schuster is a monotypic genus, with D. muricata known from Sumatra, Java, Celebes, Sabah and the Philippines. The previously known northernmost locality for the genus Dactylophorella and for D. muricata were Luzon, the Philippines. As for the locality recorded here in Taiwan, Orchid Island (22°04'39” N, 121°30'36” E) is the northernmost locality for this genus and species. A morphological description, illustration, habitat and specimens examination of D. muricata are provided in this study.