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Brevianthus flavus subsp. flavus: A lateral view of shoot B dorsal view of shoot C habitus D ventral view of shoot E–I leaves dissected and flattened J leaf apex K abaxial leaf cell surface L leaf margin at apex. All from NSW892112. Scale: 500 µm (A, B, E–I); 3000 µm (C); 1000 µm (D); 200 µm (J); 50 µm (K, L).
Source publication
Brevianthus is a distinctive genus of leafy liverwort in its succubously inserted, entire leaves, lack of underleaves, restriction of sexual organs to lateral-intercalary branches, scattered rhizoids and dense leaf-surface ornamentation. The sole species, Brevianthus
flavus, is divided into two subspecies, one in Tasmania the other in New Zealand....
Citations
... Matos et al. 2021). In liverworts, epicuticular wax crystals has been observed in selected species of Brevianthaceae, Calypogeiaceae, Cephaloziaceae, Lejeuneaceae, Lepidoziaceae, Plagiochilaceae and Radulaceae(Heinrichs et al. 2000, Pressel et al. 2011, Reiner-Drehwald & Heinrichs 2012, Gradstein & Ilkiu-Borges 2015, Renner et al. 2015 ...
Abstract: Species of Lepicolea are robust liverworts with main distribution in the Southern Hemisphere and on high mountains of tropical America and Asia. Three species have been recorded from
tropical America, L. ochroleuca, L. pruinosa and L. ramentifissa. In the course of our research on neotropical liverworts we found that several collections of Lepicolea had been misidentified. Study
of herbarium materials showed that the three species are morphologically well-defined although one of them, L. ramentifissa, had frequently been confused with L. pruinosa or L. ochroleuca.
Lepicolea ramentifissa is probably restricted to Bolivia. Additionally to the characters mentioned in the literature, we found that the three species can be distinguished by the crenation of leaf margins
and the shape of the basal cells of the lacinia. Lepicolea ramentifissa is identical to L. ochroleucain leaf areolation and crenation of leaf margins, but clearly differs in having stem paraphyllia and numerous cilia and lacinia on leaf margins. SEM analysis revealed the occurrence of a continuous layer of thickening on the abaxial leaf surfaces in L. pruinosa and L. ochroleuca, and wax crystals on the adaxial leaf surface in L. pruinosa. This is the first observation of wax crystals in Lepicoleaceae.
... Brevianthaceae was set up for a single species, B. flavus . Renner et al. (2015) described a second species and Söderström et al. (2013) added Tetracymbaliella based on the sister relationship of T. cymbalifera and Brevianthus recovered by He-Nygrén et al. (2006) and Feldberg et al. (2010cFeldberg et al. ( , 2014. Here, we include further accessions of Tetracymbaliella and confirm its sister relationship with Brevianthus. ...
The Lophocoleaceae-Plagiochilaceae-Brevianthaceae clade i s a largely terrestrial , subcosmopolitan lineage of jungermannialean leafy liverworts that may include significantly more than 1000 species.
Here we present the most comprehensively sampled phylogeny available to date based on the nuclear ribosomal internal transcribed spacer region and the chloroplast markers rbcL and rps4 of 372 accessions. Brevianthaceae (consisting of Brevianthus and Tetracymbaliella) form a sister relationship with Lophocoleaceae; this lineage is in turn sister to Plagiochilaceae. Plagiochila is resolved
monophyletic subsequent to exclusion of Plagiochila radiculosa; this species is placed in a new genus
Cryptoplagiochila. Chiastocaulon and a polyphyletic Acrochila nest in Plagiochilion; these three genera are
united under Chiastocaulon to include the Plagiochilaceae species with dominating or exclusively ventral branching. The generic classification of the Lophocoleaceae is still unresolved. We discuss alternative approaches to obtain strictly monophyletic genera by visualizing their consistence with the obtained consensus topology. The presented phylogeny will serve as a basis for follow-up studies
including several thousand accessions. These studies will enable revision of current hypotheses on species diversity and distribution of Lophocoleaceae-Plagiochilaceae-Brevianthaceae and allow for a reconstruction of their evolution in time and space.
... In a recent paper a distinctive new species of Brevianthus was described from New Caledonia on the basis of material collected on Mont Kouakoue by the late Elizabeth Brown (Renner et al. 2015). The fact that a previously published name existed for this plant escaped our attention. ...
Brevianthus hypocanthidium and Aponardia huerlimannii are found to be synonymous and the new combination Brevianthus huerlimannii is made.
... Brevianthaceae was set up for a single species, B. flavus . Renner et al. (2015) described a second species and Söderström et al. (2013) added Tetracymbaliella based on the sister relationship of T. cymbalifera and Brevianthus recovered by He-Nygrén et al. (2006) and Feldberg et al. (2010cFeldberg et al. ( , 2014. Here, we include further accessions of Tetracymbaliella and confirm its sister relationship with Brevianthus. ...
The Lophocoleaceae-Plagiochilaceae-Brevianthaceae clade is a largely terrestrial, subcosmopolitan lineage of jungermannialean leafy liverworts that may include significantly more than 1000 species. Here we present the most comprehensively sampled phylogeny available to date based on the nuclear ribosomal internal transcribed spacer region and the chloroplast markers rbcL and rps4 of 372 accessions. Brevianthaceae (consisting of Brevianthus and Tetracymbaliella) form a sister relationship with Lophocoleaceae; this lineage is in turn sister to Plagiochilaceae. Plagiochila is resolved monophyletic subsequent to exclusion of Plagiochila radiculosa; this species is placed in a new genus Cryptoplagiochila. Chiastocaulon and a polyphyletic Acrochila nest in Plagiochilion; these three genera are united under Chiastocaulon to include the Plagiochilaceae species with dominating or exclusively ventral branching. The generic classification of the Lophocoleaceae is still unresolved. We discuss alternative approaches to obtain strictly monophyletic genera by visualizing their consistence with the obtained consensus topology. The presented phylogeny will serve as a basis for follow-up studies including several thousand accessions. These studies will enable revision of current hypotheses on species diversity and distribution of Lophocoleaceae-Plagiochilaceae-Brevianthaceae and allow for a reconstruction of their evolution in time and space.
A widely accessible list of known plant species is a fundamental requirement for plant conservation and has vast uses. An index of published names of liverworts and hornworts between 2015 and 2016 is provided as part of a continued effort in working toward maintaining an updated world checklist of these groups. The list herein includes 64 higher taxon names, 225 specific names, 35 infraspecific names, two infrageneric autonyms and 21 infraspecific autonyms for 2015 and 2016, including also names of fossils and invalid and illegitimate names. Thirty-three older names omitted in the earlier indices are included.
A working checklist of accepted taxa worldwide is vital in achieving the goal of developing an online
flora of all known plants by 2020 as part of the Global Strategy for Plant Conservation. We here present
the first-ever worldwide checklist for liverworts (Marchantiophyta) and hornworts (Anthocerotophyta)
that includes 7486 species in 398 genera representing 92 families from the two phyla. The checklist
has far reaching implications and applications, including providing a valuable tool for taxonomists and
systematists, analyzing phytogeographic and diversity patterns, aiding in the assessment of floristic and
taxonomic knowledge, and identifying geographical gaps in our understanding of the global liverwort
and hornwort flora. The checklist is derived from a working data set centralizing nomenclature, taxonomy
and geography on a global scale. Prior to this effort a lack of centralization has been a major
impediment for the study and analysis of species richness, conservation and systematic research at both
regional and global scales. The success of this checklist, initiated in 2008, has been underpinned by
its community approach involving taxonomic specialists working towards a consensus on taxonomy,
nomenclature and distribution.
