Latest Articles from PhytoKeys Latest 5 Articles from PhytoKeys https://phytokeys.pensoft.net/ Fri, 29 Mar 2024 03:55:54 +0200 Pensoft FeedCreator https://phytokeys.pensoft.net/i/logo.jpg Latest Articles from PhytoKeys https://phytokeys.pensoft.net/ Marsupella brasiliensis sp. nov. (Gymnomitriaceae, Marchantiophyta) from Brazil – the distribution of sect. Stolonicaulon in Neotropics is now confirmed https://phytokeys.pensoft.net/article/103975/ PhytoKeys 226: 65-77

DOI: 10.3897/phytokeys.226.103975

Authors: Vadim A. Bakalin, Yulia D. Maltseva, Alfons Schäfer-Verwimp, Seung Se Choi

Abstract: The specimen previously identified as Marsupella microphylla from Brazil is reassessed and described as a new species, M. brasiliensis. The new species is characterized by paroicous inflorescence, bispiral elaters, scale-like, commonly unlobed leaves and very small leaf cells. Descriptions and drawings are provided along with a corresponding discussion of the morphological peculiarity of the new species. Marsupella brasiliensis belongs to sect. Stolonicaulon, and the distribution of Marsupella sect. Stolonicaulon in the New World is confirmed. The infrageneric position of M. microphylla remains unresolved, and whether it belongs to the same section is still unclear.

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Research Article Fri, 12 May 2023 16:55:56 +0300
The systematic position of puzzling Sino-Himalayan Lophocolea sikkimensis (Lophocoleaceae, Marchantiophyta) is identified https://phytokeys.pensoft.net/article/84227/ PhytoKeys 206: 1-24

DOI: 10.3897/phytokeys.206.84227

Authors: Vadim A. Bakalin, Yulia D. Maltseva, Ksenia G. Klimova, Van Sinh Nguyen, Seung Se Choi, Aleksey V. Troitsky

Abstract: Lophocolea sikkimensis, a little-known Sino-Himalayan species, was collected in North Vietnam and its taxonomic position was identified by molecular genetic techniques. The species is characterized by generally narrowly pointed leaves, which are not seen in other representatives of Lophocoleaceae. We found that it belongs to the recently described genus Cryptolophocolea, although it is clearly morphologically dissimilar to other members of the genus. We propose a corresponding nomenclature combination: Cryptolophocolea sikkimensis comb. nov. This species is the only one in its genus with a predominantly Sino-Himalayan distribution; the vast majority of congeners are distributed in the Southern Hemisphere (mostly in Australasia). Reports of this species in Vietnam further confirm the close phytogeographic relationships of the flora of northern Indochina with those of the Sino-Himalayas and suggest that this species is found in other parts of the Hoang Lien Range and the southern Hengduan Range.

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Research Article Thu, 25 Aug 2022 14:30:26 +0300
Revision of Gymnomitriaceae (Marchantiophyta) in the Korean Peninsula https://phytokeys.pensoft.net/article/62552/ PhytoKeys 176: 77-110

DOI: 10.3897/phytokeys.176.62552

Authors: Vadim Bakalin, Seung Se Choi, Seung Jin Park

Abstract: This paper provides a revision of Gymnomitrion and Marsupella in the Korean Peninsula based on a study of the collections housed in the herbaria of Jeonbuk National University (JNU) and the Botanical Garden-Institute in Vladivostok (VBGI). In total, 12 species were recorded (six in Gymnomitrion and seven in Marsupella), including four taxa whose identity was not confirmed with the available materials and suspected to be recorded wrongly. Each confirmed species is annotated by morphological descriptions based on available Korean material, data on ecology, distribution, specimens examined as well as illustrations.

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Research Article Fri, 16 Apr 2021 09:52:00 +0300
A review of Calypogeia (Marchantiophyta) in the eastern Sino-Himalaya and Meta-Himalaya based mostly on types https://phytokeys.pensoft.net/article/52920/ PhytoKeys 153: 111-154

DOI: 10.3897/phytokeys.153.52920

Authors: Vadim A. Bakalin, Ksenia G. Klimova, Van Sinh Nguyen

Abstract: The eastern part of the southern macroslope of the Himalayan Range, Hengduan Mountains and the complex of smaller ranges from Hengduan southward to northern Indochina is one of the taxonomic hotspots of Calypogeia in Asia and the world. Two main circumstances hamper the understanding of taxonomic diversity of the genus in this area: the absence of recent and detailed descriptions and identification keys and the necessity of studying fresh material with surviving oil bodies in leaf cells. This study resulted in 1) eleven species confirmed for this vast land, 2) seven more taxa recorded but likely based on identification mistakes and 3) fourteen more taxa that are not yet recorded but may be expected in the area. All these taxa are discussed, and most of them are illustrated and described based on the types; an identification key is provided. The occurrence of North Holarctic taxa is hardly probable in the Sino-Himalaya, whereas new records of taxa known from the southern half of the Japanese Archipelago, Taiwan and southeastern mainland China are possible.

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Research Article Thu, 16 Jul 2020 10:23:25 +0300
A new species of Brevianthus (Brevianthaceae, Marchantiophyta) from New Caledonia with unusual underleaf production https://phytokeys.pensoft.net/article/4998/ PhytoKeys 50: 43-60

DOI: 10.3897/phytokeys.50.4998

Authors: Matt A.M. Renner, John J. Engel, Simon D.F. Patzak, Jochen Heinrichs

Abstract: 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. A second species, Brevianthus hypocanthidium, is described as new and is the first record of the genus for New Caledonia. Among its distinguishing characters are its shallowly bilobed leaves, and triangular underleaves present on small to medium-sized shoot sectors, the lack of a hyaline leaf margin, and the crenulate leaf margin formed by heavily thickened external cell walls. The most unusual features of the new species are the presence of underleaves between lateral leaf insertion lines that reach the ventral stem mid-line, and the absence of underleaves from larger shoots. To explain these features we propose a competitive model of shoot formation wherein the ventral merophyte progressively loses vigor as its relative stature decreases, and its derivative cells become discontinuous and isolated along the ventral stem surface, with intervening areas occupied by derivatives of the more vigorous lateral merophytes.

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Research Article Thu, 4 Jun 2015 10:01:44 +0300