查看更多>>摘要：About 300 species of Puccinia on Poaceae have been reported globally. However, these species can be difficult to identify because of morphological similarities and difficulties of host plant identifications. The presence of many cryptic species is also suspected. Based on about 150 specimens on Poaceae and about 50 related specimens of spermogonial and aecial stages, all collected in northeastern China, a phylogenetic approach was conducted to clarify their identification and life cycles. In phylogenetic analyses 25 clades among specimens on Poaceae were detected. Each clade detected in phylogeny was interpreted as an independent species, although many clades were morphologically similar to each other. After comparative morphology with species previously reported, 17 species including three first records in China (P. cerienthes-agropyrina, P. coronati-agrostidis, P. coronati-hordei) were identified, and eight species (P. ampliaticoronata, P. digitaticoronata, P. eleganticoronata, P. elymi-albispora, P. oncospora, P. pileiformis, P. protuberanticoronata, P. ramificatacoronata) are described as new. In uredinial and telial stages, the host range of above 25 species was variable ranging from one host plant species to several host species, sometimes involving different grass genera. Thus, a phylogenetic approach is more suitable for species identifications of Puccinia on Poaceae rather than relying on rust morphology and host plant identification. Life cycle relations for 15 spermogonial and aecial species were also clarified by phylogenetic analyses. It is also suspected that grass rusts can be differentiated to species based on spermogonial and aecial stages on same or related host plants.
查看更多>>摘要：Several collections of Calostoma (Calostomataceae, Boletales) from the south of China were investigated using morphology, and molecular phylogenetic analyses of DNA sequences from the nuc 28S rDNA D1-D2 domains (28S), and the nuc rDNA internal transcribed spacer (ITS). Two species of the genus are recognized, one is the previously described taxon, C. areolatum, the other, C. sinocinnabarinum, is described as new: Detailed descriptions, color photos of fresh basidiomata and line-drawings of microstructures of the two taxa are presented.
Randi, AgustiArdi, Wisnu H.Girmansyah, DedenSitepu, Bina Swasta...
11页
查看更多>>摘要：Three new Begonia species from Kalimantan, Indonesian Borneo are described here, namely Begonia kapuashuluensis, B. patar and B. sangkulirangensis, and one species is reported as a new record for Kalimantan. Colour plates, as well as notes on distribution, habitat and conservation status are provided. On conservation status, we provisionally assess B. kapuashuluensis as near threatened, B. patar as critically endangered and B. sangkulirangensis as vulnerable.
查看更多>>摘要：A new poroid wood-inhabiting fungus in the family Irpicaceae, Irpex jinshaensis sp. nov., is described and illustrated from China based on morphological and molecular evidence. The species was collected in Yunnan Province, where it grew on the undersides of fallen angiosperm branches. I. jinshaensis is characterized by an annual growth habit, resupinate basidiocarp with white to cream pores when fresh becoming salmon to cinnamon upon drying, a monomitic hyphal system, generative hyphae thick-walled with simple septa, and occasionally covered with small crystal granules, the presence of encrusted cystidia and subglobose to globose basidiospores. The phylogenetic analysis based on ITS + nLSU rDNA sequences shows that the new species belongs to Irpex, clustering with I. hydnoides, I. hacksungii and I. lacteus with strong support. In addition, a new combination, I. subulatus, is proposed based on morphological and phylogenetic analyses. Morphological and molecular characters confirm the placement of both the new species and the combination in Irpex. A key to the species of Irpex known from China is provided.
查看更多>>摘要：Ephedra pangiensis Rita Singh & P. Sharma is recognized here as a new synonym of E. intermedia Schrenk & C.A. Mey. as both found conspecific. A detailed description of E. intermedia with additional taxonomic characters, photographs, illustrations and distribution map are provided. Morpho-anatomical comparison of E. intermedia with its congeneric taxa occurring in India is also provided for an ease of identification.
查看更多>>摘要：To clarify the nomenclature of Umbilicaria aprina var. halei and U. canescens, type material from LE and MIN was investigated. Description, measurements and photos of the thalloconidia of the type specimens are provided. According to our investigation Umbilicaria aprina var. halei is a synonym of U. rhizinata, and U. canescens is a synonym of U. aprina. Both species belong to the U. aprina group and are distinguished by the septation of their thalloconidia. Additional specimens identified by previous authors as Umbilicaria aprina var. halei and U. canescens were re-identified. Umbilicaria rhizinata is reported as new to Xinjiang, China.
查看更多>>摘要：We recognized Dicranopteris spissa (Fee) L.V.Lima & Salino comb. nov. as a segregate species distinct from Dicranopteris rufinervis and other gleichenioid ferns occurring in Brazil. This study provides taxonomic background, descriptions, images, maps, and comments regarding the morphology, ecology, and distribution of D. spissa, as well as an identification key for all Brazilian species of Dicranopteris.
Fonseca-Cortes, AndresSandoval-Ortega, Manuel Higinio
6页
查看更多>>摘要：Polycarpon tetraphyllum subsp. tetraphyllum, a species mostly occuring naturally in the Mediterranean region, is recorded for the first time for the Colombian flora. This species is easily recognized by its scarious stipules, flowers with five keeled sepals with scarious margins, three white petaloid staminodes, and D-shaped papillated seeds. To the date, this species only has been recorded in Bogota D.C., growing through the pavement. Additionally, we present the first key to genera of the Caryophyllaceae present in Colombia.
查看更多>>摘要：Two Sino-Himalayan taxa of Gymnomitrion are reviewed, based on materials from South China and North Vietnam. Gymnomitrion sichuanicum is newly described from Sichuan Province of China and is characterized by the dioicous inflorescence, very short semi-crescentic leaf sinus and acute to obtuse leaf lobes. The habit of the species is superficially similar to Marsupella sprucei, but it differs in a number of features including perianth absence, dioicy, smaller leaf cells and distribution pattern. The genetically closely related Gymnomitrion africanum differs in its deeply gibbous sinus and rounded leaf lobes. Another taxon, Gymnomirion rubidum-still a poorly-known species, although described much earlier-is found to be genetically polymorphous with two defined haplotypes which are not easily distinguished morphologically; one of these is described as a new subspecies. The species is newly recorded from North Vietnam; collected in a degenerating relict Abies delavayi stand on a substrate very unusual for Gymnomitriaceae (decaying wood). Both taxa are described, discussed and supplemented with illustrations. These findings extend a series of similar records showing the great importance of the Eastern Sino-Himalaya and its surroundings in the survival of a unique complex of narrowly distributed montane taxa.
NSTL
Magnolia Press