Entosthodon elimbatus W.Z. Ma, Shevock & S. He, a new species from a sub-alpine area in Yunnan, C... more Entosthodon elimbatus W.Z. Ma, Shevock & S. He, a new species from a sub-alpine area in Yunnan, China, is described here based on morphological and molecular data. Morphologically, the new species resembles the widespread species E. buseanus, but differs most notably in having significantly shortened setae, smaller capsules and nearly unbordered laminae. Images from the scanning electron microscope also show compound-papillose ornamentation over the spore surface, which is characteristic of this new species. The generic validation of the new species in Entosthodon is supported by a phylogenetic analysis based on the plastid rps4 sequence. Entosthodon physcomitrioides, characterized by its well-developed apophysis and peristome, is confirmed as a new record for mainland China. Detailed descriptions and illustrations for both species are provided.
ABSTRACT Yunnanobryon rhyacophilum is a rheophytic moss recently described from China. To determi... more ABSTRACT Yunnanobryon rhyacophilum is a rheophytic moss recently described from China. To determine its phylogenetic position among the currently recognized Hypnalean mosses, mitochondrial (nad5) and chloroplast (rps4) nucleic acid sequences of 237 taxa were investigated. Maximum parsimony and maximum likelihood analyses of DNA sequence data suggest that Yunnanobryon is a monophyletic sister group to the genus Regmatodon (Regmatodontaceae). The findings of this study support the establishment of the new genus Yunnanobryon, the retention of Regmatodon at the genus level, and the treatment of these two genera as the family Regmatodontaceae.
ABSTRACT A new rheophytic moss genus and species Yunnanobryon rhyacophilum occurring in fast-flow... more ABSTRACT A new rheophytic moss genus and species Yunnanobryon rhyacophilum occurring in fast-flowing rivers of western Yunnan and southern Guizhou Province is described and illustrated. It is a slender moss with stoloniform primary stems and intricately much branched secondary stems, flagellate-attenuate at the tips; small, ovate to ovate-lanceolate leaves with almost uniform areolation throughout the lamina of small, rounded, hexagonal to quadrate-hexagonal cells; coarsely serrate leaf margins in the distal portion; subpercurrent single costae; and very short, bicellular axillary hairs consisting of a large globular apical cell and a short, quadrate and brownish-tinged basal cell. The peculiar shape of the axillary hairs suggests a close alliance of this new genus with the Regmatodontaceae.
ABSTRACT Two new species of Schistidium Bruch & Schimp., S. riparium H.H.Blom, Shevock, D... more ABSTRACT Two new species of Schistidium Bruch & Schimp., S. riparium H.H.Blom, Shevock, D.G.Long & Ochyra, and S. mucronatum H.H.Blom, Shevock, D.G.Long & Ochyra, are described and illustrated. They occur in rheophytic habitats in China, S. riparium in the southern Hengduan Mountains in Yunnan Province (Lancang Jiang and Nu Jiang catchments) and S. mucronatum from further north, on the Qinghai?Tibet Plateau of Sichuan and Qinghai Provinces (Jinsha Jiang and Huang He catchments). The affinities of the new species are discussed and on the basis of their concave and broadly canaliculate leaves with plane and erect margins, S. riparium is tentatively placed in Schistidium Bruch & Schimp. subgen. Canalicularia Ochyra, whereas S. mucronatum on account of its keeled, ovate-lanceolate leaves and the strongly curved and twisted peristome teeth resembles very much species of sect. Apocarpiformia (Kindb.) Ochyra within subgen. Apocarpa Vilh.
Abstract. Bryoerythrophyllum sollmanianum J.A.Jiménez, M.J.Cano & Shevock is described and il... more Abstract. Bryoerythrophyllum sollmanianum J.A.Jiménez, M.J.Cano & Shevock is described and illustrated as a new species from the Sino-Himalayan region of China, Nepal and India. The species is corticolous, and easily distinguished from all its congeners in having stems with cluster of deciduous flagellate branchlets. Additionally, it is characterized by its lingulate leaves with apiculate apices, plane and regularly dentate margins above midleaf, costa ending below the apex, papillose basal cells that are not differentiated from the upper cells, and a rudimentary peristome. Its distinction from, and relationships with, similar species within the genus are discussed. Distribution of the new species is mapped.
ABSTRACT Fissidens, with 24 species, is the largest moss genus in the Republic of São Tomé and Pr... more ABSTRACT Fissidens, with 24 species, is the largest moss genus in the Republic of São Tomé and Príncipe. We report 21 species new for the Republic of which two are the first records for Africa. A key to Fissidens in the Republic is provided along with cited specimens examined, information on habitat, important diagnostic characters for recognition and distribution. The potential to discover additional species of Fissidens in the Republic is likely with continued exploration and specimen acquisition.
Entosthodon elimbatus W.Z. Ma, Shevock & S. He, a new species from a sub-alpine area in Yunnan, C... more Entosthodon elimbatus W.Z. Ma, Shevock & S. He, a new species from a sub-alpine area in Yunnan, China, is described here based on morphological and molecular data. Morphologically, the new species resembles the widespread species E. buseanus, but differs most notably in having significantly shortened setae, smaller capsules and nearly unbordered laminae. Images from the scanning electron microscope also show compound-papillose ornamentation over the spore surface, which is characteristic of this new species. The generic validation of the new species in Entosthodon is supported by a phylogenetic analysis based on the plastid rps4 sequence. Entosthodon physcomitrioides, characterized by its well-developed apophysis and peristome, is confirmed as a new record for mainland China. Detailed descriptions and illustrations for both species are provided.
ABSTRACT Yunnanobryon rhyacophilum is a rheophytic moss recently described from China. To determi... more ABSTRACT Yunnanobryon rhyacophilum is a rheophytic moss recently described from China. To determine its phylogenetic position among the currently recognized Hypnalean mosses, mitochondrial (nad5) and chloroplast (rps4) nucleic acid sequences of 237 taxa were investigated. Maximum parsimony and maximum likelihood analyses of DNA sequence data suggest that Yunnanobryon is a monophyletic sister group to the genus Regmatodon (Regmatodontaceae). The findings of this study support the establishment of the new genus Yunnanobryon, the retention of Regmatodon at the genus level, and the treatment of these two genera as the family Regmatodontaceae.
ABSTRACT A new rheophytic moss genus and species Yunnanobryon rhyacophilum occurring in fast-flow... more ABSTRACT A new rheophytic moss genus and species Yunnanobryon rhyacophilum occurring in fast-flowing rivers of western Yunnan and southern Guizhou Province is described and illustrated. It is a slender moss with stoloniform primary stems and intricately much branched secondary stems, flagellate-attenuate at the tips; small, ovate to ovate-lanceolate leaves with almost uniform areolation throughout the lamina of small, rounded, hexagonal to quadrate-hexagonal cells; coarsely serrate leaf margins in the distal portion; subpercurrent single costae; and very short, bicellular axillary hairs consisting of a large globular apical cell and a short, quadrate and brownish-tinged basal cell. The peculiar shape of the axillary hairs suggests a close alliance of this new genus with the Regmatodontaceae.
ABSTRACT Two new species of Schistidium Bruch & Schimp., S. riparium H.H.Blom, Shevock, D... more ABSTRACT Two new species of Schistidium Bruch & Schimp., S. riparium H.H.Blom, Shevock, D.G.Long & Ochyra, and S. mucronatum H.H.Blom, Shevock, D.G.Long & Ochyra, are described and illustrated. They occur in rheophytic habitats in China, S. riparium in the southern Hengduan Mountains in Yunnan Province (Lancang Jiang and Nu Jiang catchments) and S. mucronatum from further north, on the Qinghai?Tibet Plateau of Sichuan and Qinghai Provinces (Jinsha Jiang and Huang He catchments). The affinities of the new species are discussed and on the basis of their concave and broadly canaliculate leaves with plane and erect margins, S. riparium is tentatively placed in Schistidium Bruch & Schimp. subgen. Canalicularia Ochyra, whereas S. mucronatum on account of its keeled, ovate-lanceolate leaves and the strongly curved and twisted peristome teeth resembles very much species of sect. Apocarpiformia (Kindb.) Ochyra within subgen. Apocarpa Vilh.
Abstract. Bryoerythrophyllum sollmanianum J.A.Jiménez, M.J.Cano & Shevock is described and il... more Abstract. Bryoerythrophyllum sollmanianum J.A.Jiménez, M.J.Cano & Shevock is described and illustrated as a new species from the Sino-Himalayan region of China, Nepal and India. The species is corticolous, and easily distinguished from all its congeners in having stems with cluster of deciduous flagellate branchlets. Additionally, it is characterized by its lingulate leaves with apiculate apices, plane and regularly dentate margins above midleaf, costa ending below the apex, papillose basal cells that are not differentiated from the upper cells, and a rudimentary peristome. Its distinction from, and relationships with, similar species within the genus are discussed. Distribution of the new species is mapped.
ABSTRACT Fissidens, with 24 species, is the largest moss genus in the Republic of São Tomé and Pr... more ABSTRACT Fissidens, with 24 species, is the largest moss genus in the Republic of São Tomé and Príncipe. We report 21 species new for the Republic of which two are the first records for Africa. A key to Fissidens in the Republic is provided along with cited specimens examined, information on habitat, important diagnostic characters for recognition and distribution. The potential to discover additional species of Fissidens in the Republic is likely with continued exploration and specimen acquisition.
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