Phytotaxa 2022-09-30T13:10:35+13:00 Zhi-Qiang Zhang Open Journal Systems <p><strong>Phytotaxa </strong>is world's largest journal in botanical taxonomy. </p> <p><strong>Critical revision of <em>Trichiales</em> (Myxomycetes) at the Natural History Museum London (BM)</strong></p> 2022-09-30T10:01:16+13:00 G. MORENO A. CASTILLO H. THÜS <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">Light and scanning electron microscopy were applied to re-assess diagnostic characters of type specimens and critical specimens of twelve species in the order </span><span lang="en-GB"><em>Trichiale</em></span><span lang="en-GB">s (Myxomycetes) from the collections of the Natural History Museum in London (BM). The results were used to discuss published data and the type status for specimens of </span><span lang="en-GB"><em>Arcyria imperialis</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>Hemitrichia chrysospora</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>H. intorta</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>H. karstenii</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>H. leiotricha</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>Perichaena</em></span> <span lang="en-GB"><em>cornuvioides</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>Prototrichia metallica</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>Trichia affinis</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>T. intermedia</em></span><span lang="en-GB">, </span><span lang="en-GB"><em>T. munda</em></span><span lang="en-GB"> and </span><span lang="en-GB"><em>T. scabra</em></span><span lang="en-GB">. We conclude that </span><span lang="en-GB"><em>Hemitrichia karstenii</em></span><span lang="en-GB"> and </span><span lang="en-GB"><em>Trichia contorta</em></span><span lang="en-GB"> are autonomous species, and we confirm the synonymy of </span><span lang="en-GB"><em>Trichia intermedia</em></span><span lang="en-GB"> with </span><span lang="en-GB"><em>Trichia contorta</em></span><span lang="en-GB">. The transfer of </span><span lang="en-GB"><em>Perichaena cornuvioides</em></span><span lang="en-GB"> to the genera </span><span lang="en-GB"><em>Trichia</em></span><span lang="en-GB"> or </span><span lang="en-GB"><em>Hemitrichia </em></span><span lang="en-GB">is rejected.</span></span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong>Descriptions of three new diatom species in the genus <em>Eunotia</em> (Eunotiaceae, Bacillariophyta) from the Eocene Arctic</strong></p> 2022-09-30T10:01:18+13:00 PETER A. SIVER ERIK ODDSUND ANNE M. LOTT <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><em>Eunotia</em> is the largest and most diverse genus within the family Eunotiaceae, a primarily freshwater group of diatoms often found in dilute, acidic and humic-stained environments. Species in this genus are characterized by being asymmetric along their apical axis, symmetric about the transapical axis, and with a simple and reduced raphe system situated largely on the mantle and restricted to the apical ends of the valve. In addition, <em>Eunotia</em> taxa have one or more rimoportula per valve, usually close to the apex. Because of their reduced raphe system, coupled with the presence of rimoportulae, <em>Eunotia</em> and its relatives are often viewed as the oldest lineage of raphe-bearing diatoms. To date, the oldest remains of <em>Eunotia</em> species have been reported from the early to middle Eocene, including from the Giraffe Pipe locality, an ancient Eocene fossil site located in northern Canada near the Arctic Circle. Rocks from this site contain a large and diverse assemblage of <em>Eunotia</em> taxa. The purpose of this study is to begin to characterize this assemblage with descriptions of three new species, <em>Eunotia giraffensis</em> <em>sp. nov</em>., <em>E</em>. <em>petasum sp. nov</em>. and <em>E</em>. <em>pseudonaegelii</em> <em>sp. nov</em>. The new species, representing the longest specimens found at the Giraffe Pipe locality, each possess characteristics common to <em>Eunotia</em> making them easily assigned to this genus. Because the <em>Eunotia</em> lineage was well established by the early part of the Eocene, it is likely to be significantly older.</span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong>A new species of <em>Volvariella</em> (<em>Agaricales</em>, <em>Basidiomycota</em>) from West Bengal, India</strong></p> 2022-09-30T10:01:20+13:00 PINAKI CHATTOPADHYAY MOUSUMI TALUKDAR JESWANI BEYPIH KUMANANDA TAYUNG ARUN KUMAR DUTTA <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">A new species, <em>Volvariella bilobata</em>, has been described herein from West Bengal, India. Field photographs of the basidiocarps were provided and the new species were compared with its allied taxa based on morphological and molecular (nrITS sequence) data. <em>Volvariella bilobata</em> was characterized by a medium sized, entirely greyish brown pileus with fibrillose surface; close to crowded lamellae coloured greyish white to greyish orange; a bilobed saccate volva with greyish brown outer surface and greyish white inner surface; smaller basidiospores measuring 4.8–5.5 × 2.7–3.5 µm; clavate to ventricose lageniform cheilocystidia measuring 32–83 × 13–30 µm; variously shaped pleurocystidia measuring 18.5–27.5 × 7–10 µm; habitat on soil; and unique sequences. Detailed morphological description with illustrations and phylogenetic tree based on molecular sequence data revealed it to be a new species.</span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong>New Discoveries and New Combinations of the Fossil-genus <em>Ginkgoites</em> Seward (Ginkgoales) from the Lower and Middle Jurassic of East Siberia (Russia)</strong></p> 2022-09-30T10:01:22+13:00 ANDREY O. FROLOV IRINA M. MASHCHUK <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Based on study of leaves from the outcrops of the Mura Formation (East Siberia) the diagnosis of the species <em>Ginkgo abaniensis</em> is emended. Because fossils of Ginkgoales reproductive organs are absent in the Early and Middle Jurassic sediments of East Siberia, the assignment of <em>Ginkgo</em>-like leaves to the genus <em>Ginkgo</em> is not proved. Therefore, such leaves are assigned to the fossil-genus <em>Ginkgoites</em> and the new combinations:<em> Ginkgoites abaniensis</em> <em>comb. nov.</em>, <em>G. capillata</em> <em>comb. nov.</em> and<em> G. glinkiensis</em> <em>comb. nov.</em> are proposed. The epidermal structure clearly differentiates <em>Ginkgoites abaniensis</em> <em>comb. nov.</em> from other representatives of <em>Ginkgoites</em> known from Jurassic and Lower Cretaceous sediments of Europe, Central Asia and Siberia.</span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong><em>Phallus aureus sp. nov.</em> (Phallaceae, Basidiomycota) from Yunnan Province, China</strong></p> 2022-09-30T10:01:23+13:00 TONG LV YONG-RUI LI CHENG-CE AO JUN HE FENG-MING YU SONG-MING TANG SHU-HONG LI <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><em>Phallus aureus</em> is described as a new species from China and is characterized by an obovate, rugose, squamulose on the immature basidiomata surface, pseudostipe yellowish, grey volva, and pale yellow at the base becoming light yellow upwards. The new species is phylogenetically located in an independent lineage. A full description, colour photographs, illustrations, and a phylogenetic tree to show the position of new species are provided. </span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong><em>Trichoglottis longifolia</em> (Orchidaceae: Epidendroideae: Vandeae: Aeridinae), a new species from Sri Lanka</strong></p> 2022-09-30T10:01:25+13:00 CHAMPIKA BANDARA ANUSHA GAYAN ATTHANAGODA NADEESHA LEWKE BANDARA BHANUKA RANASINGHE PANKAJ KUMAR <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><em>Trichoglottis longifolia </em>Atthan., C. Bandara, N.L. Bandara &amp; Kumar <em>sp. nov</em>. is described and illustrated as a new species from Sri Lanka. So far, the genus was represented by a single species in Sri Lanka, <em>Trichoglottis tenera. </em>The new species can be easily distinguished from <em>T. tenera</em> in having longer leaves, yellowish-green flowers with lanceolate dorsal sepal and petals and a longer spur. This species occurs in sub-montane forests in Sabaragamuwa Province and categorized as Endangered based on the available data.</span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong><em>Rosa machailensis</em> (Rosaceae), a new species from Jammu and Kashmir, India</strong></p> 2022-09-30T10:01:27+13:00 KANWALJEET SINGH HARSH SINGH YASH PAL SHARMA SUMEET GAIROLA <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">The new species </span><span lang="en-GB"><em>Rosa machailensis</em></span><span lang="en-GB"> from Paddar subdivision of Jammu &amp;Kashmir is described and illustrated. It is closely allied to </span><span lang="en-GB"><em>Rosa moschata </em></span><span lang="en-GB">but differs in having acute leaflet, densely glandular margins and long auriculate stipules, broad prickle base, emarginate, mucronate and incised petals, small size of hips (pseudo fruit), thick exine of pollen and broad grooves on exine surface.</span></span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong><em>Hohenbergia amargosensis</em> (Bromeliaceae: Bromelioideae), a new ornamental species from Bahia, Brazil</strong></p> 2022-09-30T10:01:28+13:00 EVERTON HILO DE SOUZA TIAGO ABREU DA SILVA LIDYANNE Y. S. AONA FERNANDA V. D. SOUZA ELTON M. C. LEME <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB">The authors describe </span><span lang="en-GB"><em>Hohenbergia amargosensis</em></span><span lang="en-GB">, a new ornamental species of Bromeliaceae from the Atlantic Forest of the Amargosa city, in Bahia state, Brazil. This new species is morphologically related to </span><span lang="en-GB"><em>H. reconcavensis</em></span><span lang="en-GB">, but can be distinguished from it by the larger plant size when in bloom, longer inflorescence with laxly arranged branches, and a broader diameter at the base, primary bracts equaling to exceeding the primary branches, primary branches with longer stipe, and lilac petals. Additionally, its conservation status and phenology are discussed, and the illustrations of this new species and its morphologically close relatives are compared.</span></span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong><em>Polystichum suiyangense</em> (sect. <em>Sphaenopolystichum</em>, Dryopteridaceae), a new fern from Guizhou, China</strong></p> 2022-09-30T10:01:30+13:00 BO WANG QING-WEN SUN ZE-HUAN WANG CHUN-LING CHEN WEN-FEN XU LI-BING ZHANG <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB"><em>Polystichum suiyangense </em></span><span lang="en-GB">(Dryopteridaceae), a new species from Suiyang County, Guizhou, China, is described and illustrated. It is a member of </span><span lang="en-GB"><em>P. </em></span><span lang="en-GB">sect. </span><span lang="en-GB"><em>Sphaenopolystichum</em></span><span lang="en-GB"> and similar to </span><span lang="en-GB"><em>P. auriculum</em></span><span lang="en-GB">,</span><span lang="en-GB"><em> P. bifidum, </em></span><span lang="en-GB">and </span><span lang="en-GB"><em>P. martinii</em></span><span lang="en-GB">,</span> <span lang="en-GB">but differs from them in its frond texture, leaf color, scales on petiole and rachis, pinna shape, and pinna apex. The new species is currently known only from the type locality and is classified as CR (critically endangered) following the IUCN criteria.</span></span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong><em>Pteris trifoliolata</em>&nbsp;(Pteridaceae), a new brake fern species from karst area in Guangxi, China</strong></p> 2022-09-30T10:01:32+13:00 HONG-JIN WEI YONG-YAN LIANG <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><span lang="en-GB"><em>Pteris</em></span> <span lang="en-GB"><em>trifoliolata</em></span><span lang="en-GB"> H.J. Wei, a new species of Pteridaceae from karst area in Guangxi, China, is described and illustrated. The new species resembles </span><span lang="en-GB"><em>P. nanlingensis</em></span><span lang="en-GB"> R.H. Miao by its short creeping rhizome, dimorphic fronds and oblong-lanceolate pinnae, but can be distinguished from the latter by the number and size of pinnae, and the degree of frond dimorphism.</span></span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa <p><strong><em>Argostemma tortilobum</em> (Rubiaceae), a new species from Vietnam</strong></p> 2022-09-30T10:01:33+13:00 KE-YI FANG YI-HUA TONG TIEN-CHIN VU KHANG-SINH NGUYEN NIAN-HE XIA <p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;"><em>Argostemma tortilobum</em>, a new species endemic to Vietnam, is described and illustrated. The species is morphologically most similar to <em>A. sarmentosum</em>, but differs in having erect stem without runners, densely pilose peduncle and twisted corolla lobes with ciliate margins. </span></span></span></p> 2022-09-30T00:00:00+13:00 Copyright (c) 2022 Phytotaxa