Ayala-Hernandez, Maria M.Rios-Gomez, RamiroSolano, EloyGarcia-Mendoza, Abisai...
10页
查看更多>>摘要：Yucca muscipula is described and illustrated as a new species endemic to the Barranca de Metztitlan Biosphere Reserve, Hidalgo, Mexico. This species is morphologically related to Y. mixtecana but is shorter, has a stem that lacks branching, and has glaucous leaves that are linear, with papillae on both surfaces and an entire margin, separating into recurved filaments. When dry, the leaves of Y. muscipula persist in the distal portion of the stem after the first flowering. It can grow sympatrically with Y. filifera, that also has a pendulous inflorescence and papillose filaments across entire surface, but from which it differs in several traits including glabrous branches, and larger flowers and fruits.
查看更多>>摘要：The genus Micropsalliota is a group of saprotrophic mushrooms, characterized by small to medium-sized basidiomata with fibrillose-squamulose or glabrous pilei, ellipsoid to amygdaliform or cymbiform basidiospores and cheilocystidia that vary in shape from clavate to ventricose or lageniform with more or less a capitate apex. In this study, we described a new species of Micropsalliota from southern Oman. Species description is based on morphological features of basidiomata and phylogenetic analyses of nuc ribosomal DNA internal transcribed spacer (ITS) and D1-D2 domains of the 28S region. The new species Micropsalliota ventricocystidiata is characterized by a medium-sized basidiomata, with plano-convex pileus, covered with reddish-brown squamules and basidiospores are ellipsoid to amygdaliform with acute apex in side view and oblong in face view, measuring 7.5-8.5 x 4.5-5 mu m. Morphological comparison of M. ventricocystidiata with respect to other species of the genus is provided. We discussed that species of the genus can be divided into two groups based on their pileus morphology and basidiospores size.
查看更多>>摘要：Tylopilus yangzhuliangii (Boletaceae, Boletales) is described as a new species, based on morphological and phylogenetic evidence, from Hainan Province, a tropical region of southern China. A detailed description, color photos of fresh basidiomes, and line-drawings of microstructures of the new species are presented as well as comparisons with related species.
查看更多>>摘要：Careful examination of herbarium specimens and observation of living plants demonstrated that Synotis damiaoshanica is conspecific with S. guizhouensis and should be merged. Morphological differences of S. guizhouensis and its two most close allies, i.e. S. austroyunnanensis and S. sinica are discussed. Color plates of S. guizhouensis, S. damiaoshanica and S. austroyunnanensis are illustrated, a distribution map and a key to the three species are provided.
查看更多>>摘要：Prior to this study, only four native bamboo species: Guadua longifolia, G. velutina, Lithachne pauciflora and Olyra latifolia, had been recorded in the state of San Luis Potosi, Mexico. However, the ecological and geographical distribution of those species were unknown. Two questions are addressed in this study: How many native bamboo species are there in San Luis Potosi? and, what is the geographical and ecological distribution of those species? The botanical exploration was carried out in 2019 and 2020. The geographical and ecological distribution was determined with a record of herbaria specimens and a botanical exploration. Multivariate methods and a similarity index were used to analyze the information of bamboo species in 13 sub-basins of the Huasteca Potosina (HP). The study registered seven native species, of which five are woody species: Chusquea enigmatica, Guadua aff. longifolia, G. velutina, Otatea acuminata and Riphidocladum racemiflorum, and two are herbaceous species: Lithachne pauciflora and Olyra latifolia. The study also found that G. velutina is the most frequent native species in the study area, registered in 12 of the 13 sub-basins mapped. The species with the least frequency were C. enigmatica and O. acuminata, registered in only one sub-basin each. The sub-basins with the highest richness were located in a strip along the slopes of the Sierra Madre Oriental (the SMOR). The seven native bamboo species in San Luis Potosi are distributed in the HP region, from the windward side of the SMOR to its extension to the Gulf Coastal Plain (GCP), in an elevation range of 15-1815 m asl. These seven native species are distributed throughout the SMOR, whereas the G. velutina predominates in GCP. The distance from water bodies is a determining factor in the distribution of species, especially G. velutina, identified in the present study as a riparian species.
查看更多>>摘要：Impatiens jacobdevlasii Herath, C. Bandara & Gopallawa sp. nov. (Balsaminaceae), a new species from Knuckles (Dumbara) massif of Sri Lanka is described and illustrated. The detailed morphological characters, diagnostic comparisons, notes on habitat and ecology are presented. According to the IUCN Red List Categories and Criteria, I. jacobdevlasii is assessed as Critically Endangered (CR) by virtue of its limited distribution range and decline of mature individuals.
NSTL
Magnolia Press