Phytotaxa

**Morphological characteristics and phylogenetic analyses reveal Scopuloides yunnanensis (Polyporales, Basidiomycota), a new wood-decaying fungus from China**

ZIRUI GU, HONGMIN ZHOU, CHANGLIN ZHAO — Thu, 19 Sep 2024 00:00:00 +1200

Wood-decaying fungi, as crucial decomposers in forest ecosystems, have been the subject of meticulous research. In this study, a new wood-decaying fungal species, Scopuloides yunnanensis, found in Yunnan, China, is proposed. Scopuloides yunnanensis was identified based on a comprehensive analysis of its membranaceous basidiomata, generative hyphae, lamprocystidia, projecting cystidia, and allantoid basidiospores. In addition to the morphology, phylogenetic analyses of ITS and nLSU rRNA markers were performed with Maximum Likelihood, Maximum Parsimony, and Bayesian inference methods, ensuring the robustness of our findings. The phylogenetic analysis showed that S. yunnanensis is sister to S. hydnoides. The new species’ description, illustrations, and results of the phylogenetic analysis are provided. In addition, an identification key to all Scopuloides species worldwide is provided.

Euphorbia zhongiana (Euphorbia section Helioscopia, subgenus Esula, Euphorbiaceae), a new species from Danxia Landform Areas in Zhejiang Province, Eastern China

Thu, 19 Sep 2024 00:00:00 +1200

Euphorbia zhongiana (Euphorbiaceae), from Zhejiang Province, eastern China, is described and illustrated as a new species. It is morphologically similar to E. fauriei, however, differs in its winter green habit, whole plant being glabrous; cyathophylls 2, broadly ovate, yellow-greenish; involucre 2.5–3.0 × 2.5–3.0 mm; the surface of ovary usually smooth, rare sparsely microtuberous; styles connate at middle towards base; apex slightly 2–lobed; capsules smooth without tuberculate or conical verrucae, rare sparsely and inconspicuously rugose; seed coat with reticulate wrinkle.

**Floristic analysis of Carex (Cyperaceae), the largest cosmopolitan genus in Yunnan, China**

YUAN-YUAN LI, LI-QIONG JIANG, LI CHEN, YONG CHAI, HONG-JIN DONG, HUA PENG — Thu, 19 Sep 2024 00:00:00 +1200

Through specimen examination and field investigation, we present an extensive Carex checklist for Yunnan, China. Yunnan harbors 195 Carex species, encompassing 22 new records and recently published taxa. Prof. Wu Zhengyi’s classification of Chinese seed plants into 15 area-types, widely accepted by phytogeographers for decades, serves as our framework. Type 1 families and genera, deemed cosmopolitan, are often excluded in floristic statistics due to their perceived lack of floristic indication. We analyzed the floristic characteristics of Yunnan’s Carex, particularly representative Type 1 genera, reveals a predominantly temperate nature rather than tropical. The substantial presence of species affiliated with the Sino-Himalaya area-subtype indicates a strong association with the Sino-Himalayan Forest Subkingdom. As a globally distributed genus, Carex holds significant floristic indication at the species level. This study shows the significant value of this cosmopolitan genus in floristic research. For accurate elucidation of floristic characteristics, it is imperative to conduct species-level analyses of Cosmopolitan Area-Type genera when studying the flora of a specific floristic region.

**Three new small-flowered Magnolia species (Magnolia sect. Magnolia, Magnoliaceae) from Guatemala**

Thu, 19 Sep 2024 00:00:00 +1200

Three new endemic species of Magnolia from Guatemalan cloud forest are described and illustrated: Magnolia emilceana from Baja Verapaz Department, M. harnpariphana from Baja and Alta Verapaz Departments and M. juliana from Alta Verapaz Department. Additionally, relationships with other species are discussed, and preliminary conservation status is assigned for each species. A dichotomous key is provided for the species of Magnolia sect. Magnolia from Guatemala.

**Notes on the Morphology, Anatomy, Palynology, and Karyology of Onobrychis argaea (Fabaceae), Endemic to Turkey**

BAYRAM ATASAGUN, AHMET AKSOY, ESRA MARTİN — Thu, 19 Sep 2024 00:00:00 +1200

Onobrychis argaea belonging to the Fabaceae family, is an endangered plant species endemic to Turkey, distributed only in Kayseri Erciyes Mountain. This study represents the first comprehensive investigation into the morphology, anatomy, pollen and seed micromorphology, and chromosome characteristics of O. argaea. The previous description of the species has been expanded and modified. The pith of the root is covered with xylem tissue. In the stem cross-section, the protective tissue is periderm in the woody part and epiderm in the herbaceous part. The leaflets are amphistomatic and equifacial. The pollen grains are radially symmetric, isopolar, tricolpate, with prolate shape and reticulate-microreticulate ornamentation. The seeds are reniform, yellowish-brown, suboblate, and exhibit rugulate surface ornamentation. The number of somatic chromosomes in O. argaea is 2n = 14. The karyotype formula of this species consists of seven median chromosomes.

**Addition to the genus Harmajaea (Agaricales, Pseudoclitocybaceae): a new and a known species from China**

YUE QI, XIAO-DAN YU, JIAN-XUAN HOU, HONG-BO GUO, RUI-HENG YANG, AI-GUO XU — Thu, 19 Sep 2024 00:00:00 +1200

A new species, Harmajaea xizangense, discovered in Tibet, China, is illustrated and described based on morphological and molecular data. Morphologically, H. xizangense is mainly characterized by its small pileus, relatively larger and longer spores, and unique geographical distribution. Phylogenetic analyses were performed based on nucleotide sequences of four molecular loci: the internal transcribed spacer (ITS), the nuclear ribosomal large subunit (nrLSU), the DNA-directed RNA polymerase II subunit 2 (RPB2), and the translation elongation factor (TEF1-α). The results indicated that the specimens belonged to the genus Harmajaea, occupying an isolated position in the phylogenetic trees. Furthermore, three collections of H. harperi are introduced for the first time from Liaoning Province of China. This study provides full descriptions, color illustrations, and phylogenetic trees of the two Harmajaea species.

**Typifications in Epidendrum species (Laeliinae, Orchidaceae) endemic to Brazil**

Thu, 19 Sep 2024 00:00:00 +1200

During ongoing studies of the Brazilian species of Epidendrum, we determined that some names needed formal typification. Lectotypes for E. brevicolle, E. caldense, E. campestre, E. cinnabarinum, E. cooperianum E. goebelii, E. henschenii, E. longispathum, E. longispathum, E. paulense, E. revolutum, and E. setiferum, and an epitype for E. cooperianum are designated here. We provide discussions of the history of the names linked to each species.

**A new name Maesa sleumeri for Maesa lineolata Sleumer and lectotypification of Maesa lineolata H.R. Fletcher (Primulaceae)**

KRISHANAMOORTHY DEVANATHAN, NARAYANASAMY DHATCHANAMOORTHY — Thu, 19 Sep 2024 00:00:00 +1200

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Erratum: XIN-JUN GAN, HUI-ZHE FENG, HUAN-JIN CHEN, PING-SHENG ZHONG & QIANG FAN (2024) Taxonomic studies on the genus Ophiopogon (Asparagaceae) I:—identity of O. albimarginatus and O. pseudotonkinensis, and a new species O. guangzhouensis from Guangdong, China. Phytotaxa 662 (2): 121–136.

XIN-JUN GAN, HUI-ZHE FENG, HUAN-JIN CHEN, PING-SHENG ZHONG, QIANG FAN — Thu, 19 Sep 2024 00:00:00 +1200

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