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.
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Three generations of the Wendland family, Johann Christoph Wendland (1755–1828), Heinrich Ludolph Wendland (1792–1869) and Hermann Wendland (1825–1903), were outstanding court gardeners at the Royal ...Gardens of Herrenhausen (Hanover, Germany). The “Wendlands” not only enriched the botanical diversity of the gardens through plants obtained in exchange, purchased or collected during their own journeys, but they also achieved a good scientific reputation by publications on diverse botanical themes including the description of new taxa. Moreover, there exists a herbarium of approximately 16,600 plant specimens related to these gardens, the Wendlands and their publications. Numerous papers dealing with the Wendlands and the Royal Gardens of Herrenhausen have been published. The Herrenhausen Herbarium, however, also known as the Wendland Herbarium, which was donated to the University of Göttingen in 1969, was so far neither digitized nor revised. Here, we describe the history and the current digitization of this herbarium, which includes specimens collected between 1780 and 1857. It consists of three major parts: the Herrenhausen Herbarium arranged according to the Linnaean System (13,035 specimens), the palm collection (1069 specimens) and smaller collections (specimens collected by Hermann Wendland in Central America, collections of Carl Hoffmann from Costa Rica and a part of Jakob Friedrich Ehrhart's herbarium, who was a student of Linnaeus; approximately 2500 specimens). The systematic digitization of this historical herbarium as a whole revealed a seemingly unconventional arrangement of the specimens, which we explain here for the correct interpretation of collection data. Furthermore, and despite the meagre information on the herbarium labels, we were able to identify 260 specimens from a trip of Heinrich Ludolph Wendland to Switzerland in 1820. By comparing the specimen labels with entries in his diary and travel report, we were able to retrace detailed information on localities and dates, providing historical biodiversity information. Also, the historical identification of these specimens was revised. A list of collectors represented in the Herrenhausen Herbarium is provided, which includes famous names such as Linnaeus and his students Afzelius, Bergius, Ehrhart, Schreber, and Thunberg.
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Fertile plants of Lejeunea capensis were found in Tucumán, Argentina. The population discovered in the Chaco Serrano represents a new location with respect to the nearest occurrences in Northwest of ...Argentina and is the first record of sporophyte-bearing plants. Here we provide an amended description and an illustration including the first data of the sporophyte of L. capensis.
A new rheophytic liverwort species, Lejeunea topoensis (Lejeuneaceae), is described from the Andes of Ecuador and southern Brazil. The new species is intermediate between Lejeunea and ...Neopotamolejeunea, combining short leaf insertions typical of the former genus, and robust stems and pinnate branching with numerous short sexual branches characteristic of the latter. Neopotamolejeunea is therefore reduced to subgeneric status under Lejeunea. The discovery of L. topoensis adds a further species to the growing list of taxa with disjunct distribution in the Andes and the Atlantic coastal region of Brazil. It is postulated that the disjunct range resulted from long-distance dispersal, although it might to some extent reflect under-representation of collections. The new name L. juruana, replacing Neopotamolejeunea uleana, is proposed. Cheilolejeunea rupestris is a new synonym of C. beyrichii.
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We describe the new liverwort species Cheilolejeunea schiavoneana M.E.Reiner & Gradst. from submontane rainforest in the Western Cordillera of Colombia. The new species is related to C. adnata (C. ...sect. Cheilolejeunea) but differs by larger plant, leaf and underleaf size, robust stems, a 5-6 cells wide ventral merophyte, abundance of microphyllous branches, and vegetative reproduction by caducous leaf lobes produced on flagelliform shoots. The latter feature is characteristic of the genus Rectolejeunea and its presence in Cheilolejeunea is apparently a case of parallel evolution. The discovery of C. schiavoneana adds a further endemic taxon to the rich flora of the Colombian Western Cordillera. Key
Chonecolea doellingeri (Nees) Grolle, whose South American record is restricted to Argentina and Brazil, is reported for the first time for Paraguay. Additionally, its differences to related species ...are discussed and SEM microphotographs are provided.
The new species Lejeunea tamasii M. E. Reiner, N. Salazar Allen & C. Chung C. from Barro Colorado Island, Panama, named in honor of Professor Tamás Pócs, is described and illustrated. Lejeunea ...tonduzana (Steph.) M. E. Reiner, comb. nov. (basionym: Hygrolejeunea tonduzana Steph.), L. recurva M. E. Reiner, nom. nov. (basionym: Hygrolejeunea recurva Steph. ex Bonner, nom. inval., H. herzogii Steph. 1916, nom.illeg.), and new synonyms in Lejeunea cerina (Lehm. & Lindenb.) Gottsche, Lindenb. & Nees (= Hygrolejeunea aspera Steph., = H. similis Steph.) and Lejeunea flava (Sw.) Nees (= Hygrolejeunea bahiensis Steph.) are proposed. Descriptions and illustrations for Lejeunea tonduzana and L. recurva are also provided.
Pictolejeunea levis, a new species of Lejeuneaceae found in N.E. Cuba, is described and illustrated. The species stands out within Pictolejeunea on account of its smooth leaf cells and the presence ...of ocelli on dorsal and ventral epidermal cells of the stem. Differences between this and the other four known species in the genus are discussed.
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