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.

/pdf/world-checklist-of-hornworts-and-liverworts-2eqzlt4g3g.pdf

World checklist of hornworts and liverworts.

An updated checklist of the liverworts (Marchantiophyta) and hornworts (Anthocerotophyta) of Taiwan is presented. Based on published records, the present checklist includes 512 species of liverworts belonging to 116 genera in 52 families and 19 species of hornworts belonging to six genera in three families. Lejeuneaceae with 121 spp. in 24 genera is the largest family, containing ca. 23% of the total number of species. Genera with more than ten species are Frullanici (49 spp.), Cololejeunea (41 spp.), Plagiochila (36 spp.), Radula (26 spp.), Lejeunea (25 spp.), Bazzania (18 spp.), Scapania (18 spp.), Solenostoma (17 spp.), Riccardia (15 spp.), Porella (12 spp.) and Heteroscyphus (11 spp.). Twenty-five taxa are hitherto known only from Taiwan. Forty-seven formerly recorded species are dubious and excluded from this checklist. Chiloscyphus engelii R.L. Zhu & M.J. Lai nom. nov. as well as Folioceros verruculosus (J. Haseg.) R.L. Zhu & M.J. Lai comb. nova, Lejeunea barbata (Herzog) R.L. Zhu & M.J. Lai, comb. ...

/pdf/liverworts-and-hornworts-of-taiwan-an-updated-checklist-and-3102jj5aj4.pdf

Liverworts and Hornworts of Taiwan: An Updated Checklist and Floristic Accounts

A Systematic Revision of the Genus Lejeunea Lib. (Marchantiophyta: Lejeuneaceae) in Malaysia

1. Anthoceros punctatus L.Contributors: B. Cykowska and F. MogroBolivia: Dept. Tarija, Prov. Arce, near Reserva de Fauna Tariquia reserve, next to the road from Sidras to Camberi, 22°12′09·7″S, 64°...

New national and regional bryophyte records, 38

https://bioone.org/journals/cryptogamie-bryologie/volume-38/issue-4/v38.iss4.2017.411/New-Liverwort-and-Hornwort-Records-for-Vietnam/10.7872/cryb/v38.iss4.2017.411.pdf

New Liverwort and Hornwort Records for Vietnam

One new species, Lejeunea convexiloba, is described and figured. Lejeunea proliferans Herzog and L. patens Lindb. var. uncrenata K. C. Chang are treated as new synonyms of L. cocoes Mitt. and L. parva (Hatt.) Mizut., respectively. The former is figured in detail. Three species, Lejeunea konosensis Mizut., L. magohukui Mizut., and L. tuberculosa Steph., are reported from China for the first time and critical comments are provided. Lejeunea is certainly one of the most difficult genera of Hepaticae. Piippo (1990) listed 30 species and one variety from China. Lin and Yang (1992) described a new species, Lejeunea chaishanensis, from Taiwan. Qiu (1993) reported Microlejeunea roundistipula Steph. var. pallida Hatt. (now as Lejeunea pallide-virens Hatt.) from Guangxi. Recently, So and Zhu (1996) added three species, L. otiana Hatt., L. curviloba Steph., and L. sp. from Hong Kong. A total of 36 species and one variety have been recorded from China. This paper describes one new species, treats two synonyms, and reports three species new to China. LEJEUNEA COCOES Mitt., Jour. Proc. Linn. Soc. London 5: 114. 1861. (FIG. 1:1-18) Lejeunea proliferans Herzog, Jour. Hattori Bot. Lab. 14: 51. 1955. syn. nov. The distinguishing features of Lejeunea cocoes include 1) small size of plants (less than 0.6 mm wide with leaves), 2) only 3(-5) medullary cells of stem in transverse section, 3) remote to contiguous leaves distinctly longer than wide, 4) large leaf cells (marginal cells 10-18 x 13-24 jim, median cells 22-38 x 18-28 jim) with thin walls and indistinct trigones, 5) deeply bilobed underleaves with two lanceolate lobes, 6) dioicous sexual condition, 7) presence of regenerants from leaf margins, 8) presence of male bracteoles only at the base of androecium, 9) small compound oil bodies (2-6 per cell, mostly oblong-fusiform, 1.5-2.1 x 4.2-6.3 im), 10) slight tendency towards caducity, 11) well developed leaf lobules with a non-constricted apex, and 12) gynoecium always with a lejeuneoid innovation usually on one side. Lejeunea cocoes is somewhat related to Lejeunea subg. Heterolejeunea (Schust.) Grolle (Grolle 1995), because of the presence of regenerants and its slight ability to produce caducous leaves. Besides Lejeunea cocoes, L. subacuta Mitt. is also a species with strong ability to produce caducous leaves. However, the other characteristics of the two species, such as texture, the first tooth, oil body, leaf lobule, and marginal cells of leaf lobe are typically lejeuneoid. The distinction between Rectolejeunea Evans and Lejeunea has been clarified by Grolle (1995). According to him true Rectolejeunea s. str. is confined to the Neotropics. Lejeunea cocoes is often confused with Lejeunea anisophylla Mont. and Lejeunea subigiensis Steph. These three species have large leaf cells and similar morphology of underleaves. However, L. cocoes can be separated from these two species by being dioicous, having 3(-5) medullary cells of stem in transverse section, and the presence of regenerants from the leaf margin. Sometimes some poorly developed forms of L. cocoes are somewhat similar to Microlejeunea Steph. However, the former differs in the following features: 1) large leaf cells, 2) small, uncurved lobular tooth, 3) absence of basal ocelli in leaf lobe, and 4) presence of regenerants from leaf margin. Particularly, the presence of regenerants can be used to separate L. cocoes from other related species. Regenerants are common in Taiwanese material, but only a few occur in the type collection and in the Guangxi material, and fewer still in other specimens. The known range of L. cocoes now includes China and Sri Lanka (Fig. 3). Descriptions and illustrations are in Mizutani (1963) and Zhu and So (1996). The species has been found on tree trunks, rotten logs, and rarely on living leaves. Specimens examined.-CHINA. GUANGXI. Xingan, Xiaomiaoershan, Gao & Zhang 1754 (HSNU, IFP); HAINAN. Bawangling Nature Reserve, 1,100 m, Zhu 89304 (HSNU); HONG KONG. Tai Mo Shan, 700 m, So & Zhu 95424L2 reported by Zhu and So (1996) as Lejeunea sp. (HKBU, HSNU); TAIWAN. Botel Tobago, Schwabe 90 (holotype of Lejeunea proliferans JE); ZHEJIANG. Baishanzu Nature Reserve, Chegen, 800 m, Zhu 901135 (HSNU). SRI LANKA. Balagama, "Ad truncos Cocos nucifera", Gardner 1399 [1499] (isotype of Lejeunea cocoes BM). LEJEUNEA CONVEXILOBA M.-L. So & R.-L. Zhu, sp. nov. (FIG. 2: 1-30) Planta autoica, caulis irregulariter ramosus. Lobus folii triangulo-ovatus, concavus, apice obtuso-roundato. Lobu0007-2745/98/137-143$0.85/0 This content downloaded from 157.55.39.127 on Mon, 27 Jun 2016 05:26:09 UTC All use subject to http://about.jstor.org/terms 138 THE BRYOLOGIST [VOL. 101

On six species of the genus lejeunea in china, including one new species

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On six species of the genus lejeunea in china, including one new species