Phytotaxa 2024-05-23T11:42:15+12:00 Zhi-Qiang Zhang Open Journal Systems <p><strong>Phytotaxa </strong>is world's largest journal in botanical taxonomy. </p> <strong>A new species of <em>Bernardia</em> (Euphorbiaceae, Acalyphoideae) with stellate trichomes from South America</strong> 2023-09-18T12:46:30+12:00 JUAN F. CARRIÓN ANDRÉ M. AMORIM <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><em>Bernardia fluviatilis </em>is described as a new species of Euphorbiaceae from the Upper Paraguay River Basin in central South America. A literature review, examination of herbarium specimens, and fieldwork suggest that the new taxon is most similar to <em>B.</em> <em>argentinensis</em> but differs by its young branches covered by a sparsely sericeous indumentum of simple trichomes, usually shorter staminate peduncles, cymules scattered along the axis of the staminate inflorescence, and staminate flower pedicel usually glabrous. Illustrations, photographs, information about the distribution, habitat, and conservation status of the new species, and a key to the morphologically similar species, are also provided.</span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong><em>Pseudoplectania mystica</em> (Ascomycota, Pezizales), a new cup fungus with an endophytic habit of a broad range of host plants</strong> 2024-03-12T02:33:19+13:00 JIA Y. LIN LING-HAN GUO GUANG-MEI LI MING ZHANG DE-CHUN XIE SHU-XIAN HE KUN L. YANG <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">A cup fungus producing ascomata on senescing to dead rhizomes of bamboo in East China is described as <em>Pseudoplectania mystica</em> <em>sp. nov.</em> (Ascomycota, Pezizales) based on morphological, ecological and phylogenetic evidence. Some sequences of unidentified endophytic fungi uploaded to the GenBank database by other researchers were also identified as <em>P. mystica </em>in our phylogeny. By checking the original literature of these sequences, <em>P. mystica</em> was further found to act as an endophyte in a broad range of host plants including <em>Aegiceras</em>, <em>Cinnamomum</em>, <em>Dendrobium</em> and <em>Lindera</em>, probably lurking in the tissues of the host plants as invisible mycelium in most cases and only producing visible ascomata following senescence of the host tissues. Such ecology and a combination of all its morphological characteristics make <em>P. mystica</em> recognizable from other known species of <em>Pseudoplectania</em>. This study contributes to the understanding of the species diversity and lifecycle of <em>Pseudoplectania</em>.</span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong>Multi-locus phylogeny and morphology of <em>Curvularia</em> isolates associated with leaf spots of corn in northern Algeria unveiled two new species<em>, C. algeriensis sp. nov. </em>and <em>C. boudouaouensis sp. nov.</em>, with a new record for <em>C. spicifera</em></strong> 2024-04-04T08:09:31+13:00 ABDENOUR ZIBANI OANA SICORA MONICA MARIAN HAMIDA BENSLIMANE <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">In this study, we investigated fungi associated with leaf spots of corn in northern Algeria. Fungal isolates were recovered from sampled leaves and were subjected to morphological and molecular identification. Morphology and multi-locus phylogeny, including the internal transcribed spacers 1 and 2 with 5.8S (ITS) along with partial glyceraldehyde-3-phosphate dehydrogenase (<em>GAPDH</em>) and translation elongation factor 1-α (<em>TEF1</em>) genes, supported the proposal of two new species, <em>Curvularia algeriensis</em> and <em>Curvularia boudouaouensis</em>, as well as a new record for <em>Curvularia spicifera</em>. These two new species are closely related and clustered sisters to <em>Curvularia sporobolicola </em>in the phylogenetic analysis. Morphologically, they can be distinguished by the shape and size of their conidia and conidiophores. The conidia of <em>C. algeriensis</em> are asymmetrically ellipsoidal, with the basal side larger than the apical side. In contrast, those of <em>C. boudouaouensis</em> are ellipsoidal to subcylindrical, and in <em>C. sporobolicola</em>, they are hemi-ellipsoidal. Additionally, the conidia of <em>C. algeriensis</em> are distinctly longer and larger than those of <em>C. boudouaouensis</em> and tend to be slightly longer and narrower than those of <em>C. sporobolicola</em>. <em>C. algeriensis</em> can also be distinguished by its longer conidiophores compared to its closest relatives. Inoculation of corn seedlings supported the pathogenicity of the two new species, as well as the new record.</span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong><em>Stemphylium persianum sp. nov.</em>, (Pleosporales, Ascomycota) from Iran</strong> 2024-05-08T19:12:02+12:00 ABDOLLAH AHMADPOUR YOUBERT GHOSTA FATEMEH ALAVI ZAHRA ALAVI SAMANTHA C. KARUNARATHNA SAOWALUCK TIBPROMMA <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><em>Stemphylium</em> species are saprophytes, or plant pathogens mostly associated with economically important crops. In this study, we isolated <em>Stemphylium</em> strains from grey to brown lesions on the culms of <em>Schoenoplectus</em> sp. (Cyperaceae, Poales). Based on combined morphological characteristics and sequence data of the internal transcribed spacer (ITS‒rDNA) region, parts of glyceraldehyde-3-phosphate dehydrogenase (<em>gapdh</em>) and calmodulin (<em>cmdA</em>) genes, the studied <em>Stemphylium </em>strains were identified and described herein as a new species, <em>S</em>.<em> persianum</em>. The new species is phylogenetically closely related to <em>S. halophilum</em> and <em>S. lycii</em>, however, they are distinguishable based on conidiophores, conidia, and ascospores morphology. Detailed morphological descriptions, illustrations, and phylogenetic relationships with other <em>Stemphylium</em> species are provided herein.</span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong><em>Lulesia umbrinomarginata</em> (Entolomataceae, Agaricales), a newly discovered species from Southern China</strong> 2024-03-25T19:16:09+13:00 YING-QUN XIAO YOU-DI XU ZUO-HONG CHEN ZHENG-MI HE <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">The current study presents a new <em>Lulesia </em>species, namely <em>L</em>. <em>umbrinomarginata</em>, based on morphological and phylogenetic evidence. The analysis of five-locus dataset (ITS, LSU, <em>RPB2</em>, <em>TEF1</em>, and <em>ATP6</em>) suggests that it belongs to <em>Lulesia</em> subgenus <em>Lulesia</em>. It is distinguished by its clitocyboid basidiome, featuring a greyish brown to wood brown pileus with a darker involute margin, a depressed center and a positive red reaction to KOH, pale yellow-brown decurrent lamellae, a whitish, slightly eccentric stipe that darkens near the apex, an irregular lamellar trama, broadly ellipsoid angular basidiospores ornamented with undulating pustules, and the absence of clamp connections.</span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong>A new species of<em> Ceratostema</em> (Ericaceae: Vaccinieae)<em> </em>from the province of Morona-Santiago, Ecuador</strong> 2023-11-13T00:39:55+13:00 MARCO M. JIMÉNEZ ALISSON FIERRO MINDA LEISBERTH VÉLEZ-ABARCA GABRIEL A. ITURRALDE HENRY X. GARZÓN-SUÁREZ <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">A new species of <em>Ceratostema </em>from the southern Ecuadorian province of Morona-Santiago is described and illustrated. The taxonomy and morphological similarities of <em>C. agettiorum </em>with its closely related species are discussed and information about its distribution, habitat, and conservation status is provided. </span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong>A new species of <em>Impatiens </em>from the Nelliyampathy region of southern Western Ghats, India</strong> 2024-03-27T20:38:21+13:00 ARYA SINDHU VENUGOPALAN NAIR SARADHAMMA ANILKUMAR AMBIKA VISWANATHAN PILLLAI ALEN ALEX PHILIP JOSE SOJAN VEERANKUTTY SURESH <p align="justify"><span style="color: #000000;"><span style="color: #040409;"> <span style="font-family: Times New Roman, serif;"><span style="font-size: small;">A new species, </span><em>Impatiens minnamparaensis</em>, belonging to section <em>uniflorae</em> is described and illustrated from southern Western Ghats of Kerala. It is morphologically similar to <em>Impatiens sasidharanii</em> but can easily be distinguished in having ovate-oblong leaf, milky white distal lobe of keel petal, red blotch on lower sepal, pollen architecture and capsule morphology. It is also showing similarities with <em>I. rupicola </em>but differs in shape of lower sepal, shape of distal lobe, number of flowers per axil, anther, pollen and capsule morphology.<em> Impatiens minnamparaensis </em>is assessed here as Endangered based on the categories and criteria of the IUCN Red List. </span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong>New species and new Chinese record of Hypocreaceae from China</strong> 2024-03-19T15:12:20+13:00 ZHAO-QING ZENG XIANG-HUA WANG WEN-YING ZHUANG <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span style="color: #040409;"><em>Trichoderma</em></span> <em>clavaticapitatum</em> <em>sp. nov.</em> is described and illustrated based on specimen collected from alpine Hengduan Mountains, Yunnan Province, China. The fungus is characterized by simple, clavate stromata with a capitate fertile part, flask-shaped, subglobose to oblong perithecia, and cylindrical asci containing 16 part-ascospores. Morphological characteristics and analyses of combined RPB2 and TEF1 DNA sequences support its placement in <em>Trichoderma</em>. Differences between the novel species and its close relatives are compared in detail. Additionally, <em>Hypocreopsis rhododendri</em>, a rare fungus, is reported for the first time from the country.</span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong><em>Hermatomyces pyriformis sp. nov.</em>, a novel dematiaceous hyphomycete (Hermatomycetaceae, Pleosporales) associated with medicinal plants in Yunnan Province, China</strong> 2024-04-22T22:08:02+12:00 HONG-ZHI DU NING-GUO LIU RATCHADAWAN CHEEWANGKOON JIAN-KUI LIU <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span style="color: #05050c;">During investigations of hyphomycetous fungi from medicinal plants in Yunnan Province, China, a novel species of </span><span style="color: #05050c;"><em>Hermatomyces</em></span><span style="color: #05050c;"> was discovered.</span><span style="color: #05050c;"><em> Hermatomyces</em></span> <span style="color: #05050c;"><em>pyriformis</em></span><span style="color: #05050c;"> is introduced based on morphology and phylogenetic analyses of combined LSU, ITS, </span><span style="color: #05050c;"><em>tef1-α </em></span><span style="color: #05050c;">and </span><span style="color: #05050c;"><em>rpb2</em></span><span style="color: #05050c;"> sequence data. This fungus is characterized by having sporodochial conidiomata and determinate, hyaline, pyriform conidiogenous cells bearing brown, globose to subglobose or ellipsoidal, muriform lenticular conidia with dark brown center and brown peripheral cells. Phylogenetic results indicated that two isolates of </span><span style="color: #05050c;"><em>H</em></span><span style="color: #05050c;">. </span><span style="color: #05050c;"><em>pyriformis</em></span><span style="color: #05050c;"> represent a distinct lineage and can be recognized as a new species. A detailed description and illustration are provided for the new species.</span></span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024 Phytotaxa <strong><em>Glycomis quangtriensis </em>(Rutaceae), a new species from Quang Tri province, central Vietnam</strong> 2024-05-23T09:35:48+12:00 TUAN ANH LE SHUICHIRO TAGANE <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span style="color: #040409;"><span lang="en-GB">A new species of </span></span><span lang="en-GB"><em>Glycosmis</em></span><span lang="en-GB"> (Rutaceae),</span><span lang="en-GB"><em> G. quangtriensis</em></span><span lang="en-GB"> is described based on the specimens collected from the Limestone Razorback Hill and Rockpile Hill, in Huong Hiep Commune, Dakrong District and Cam Tuyen Commune, Cam Lo District, Quang Tri Province, central Vietnam. Morphological description, photographs, a distribution map, vernacular name, and preliminary conservation status are provided for </span><span lang="en-GB"><em>G. quangtriensis</em></span><span lang="en-GB">. This species is characterized by shrubby habit 1.5 m tall, simple and subsessile leaves, elliptic-oblong lamina with undulate margin and auriculate base, by which combination it is clearly distinguished from all the previously known species in the genus.</span></span></span></span></p> 2024-05-23T00:00:00+12:00 Copyright (c) 2024