A new species, Hoya honglenae and the first report of H. acuminata and H. phuwuaensis (Apocynaceae, Asclepiadoideae) in the flora of Vietnam

IF 1 4区生物学 Q3 PLANT SCIENCES

Phytotaxa Pub Date : 2023-12-27 DOI:10.11646/phytotaxa.632.1.5

V. Nguyen, Leonid V. Averyanov, Quoc Bao Nguyen, VAN-SON Dang, V. Nguyen, T. Maisak, B. Truong

引用次数: 0

Abstract

Three species of the genus Hoya (Apocynaceae, Asclepiadoideae) are newly reported for the flora of Vietnam. One species, Hoya honglenae, is described and illustrated as new to science, and two species, H. acuminata and H. phuwuaensis, are reported as new national records known earlier, respectively, in Bhutan, Bangladesh, NE India, W China, Myanmar; and NE Thailand. The new species discovered in Phu Quoc Island (Kien Giang Province) morphologically is most close to H. phuwuaensis, but differs in the entire, straight leaf margin, leaves sparsely white speckled adaxially and dirty purple speckled abaxially, smaller yellow flowers, conoid, obtuse, distally up-cured outer angle of corona lobes, and much longer anther appendages. The paper provides morphological descriptions, data on habitat, phenology, distribution, estimated conservation status, taxonomic notes, a list of studied specimens, and color illustrations for all studied species. Taking into consideration our new data, the genus in Vietnam currently includes 44 species.

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越南植物区系中的一个新种 Hoya honglenae 以及 H. acuminata 和 H. phuwuaensis（天南星科，Asclepiadoideae）的首次报道

越南植物区系中新报告了三个 Hoya 属（天南星科，Asclepiadoideae）物种。H. acuminata 和 H. phuwuaensis，分别在不丹、孟加拉国、印度东北部、中国西部、缅甸和泰国东北部发现。phuwuaensis 最接近，但不同之处在于叶缘全缘、平直，叶片正面有稀疏的白色斑点，背面有污紫色斑点，黄色花朵较小，副花冠裂片呈圆锥形，上部钝，外角上翘，花药附属物较长。本文提供了所有研究物种的形态描述、生境、物候、分布数据、估计保护状况、分类注释、研究标本清单和彩色插图。考虑到我们的新数据，该属在越南目前包括 44 个种。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Phytotaxa PLANT SCIENCES-

CiteScore

1.90

自引率

27.30%

发文量

956

审稿时长

1 months

期刊介绍： Phytotaxa is a peer-reviewed, international journal for rapid publication of high quality papers on any aspect of systematic and taxonomic botany, with a preference for large taxonomic works such as monographs, floras, revisions and evolutionary studies and descriptions of new taxa. Phytotaxa covers all groups covered by the International Code of Nomenclature foralgae, fungi, and plants ICNafp (fungi, lichens, algae, diatoms, mosses, liverworts, hornworts, and vascular plants), both living and fossil. Phytotaxa was founded in 2009 as botanical sister journal to Zootaxa. It has a large editorial board, who are running this journal on a voluntary basis, and it is published by Magnolia Press (Auckland , New Zealand). It is also indexed by SCIE, JCR and Biosis. All types of taxonomic, floristic and phytogeographic papers are considered, including theoretical papers and methodology, systematics and phylogeny, monographs, revisions and reviews, catalogues, biographies and bibliographies, history of botanical explorations, identification guides, floras, analyses of characters, phylogenetic studies and phytogeography, descriptions of taxa, typification and nomenclatural papers. Monographs and other long manuscripts (of 60 printed pages or more) can be published as books, which will receive an ISBN number as well as being part of the Phytotaxa series.