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Carex concava (Carex sect. Rhomboidales, Cyperaceae), a new species from Hainan, China

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文献类型：外文期刊

作者： Yang, Hu-Biao ¹ ; Li, Xiao-Xia ² ; Bai, Chang-Jun ¹ ; Wang, Wen-Qiang ¹ ; Liu, Guo-Dao ¹ ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Danzhou 571737, Hainan, Peoples R China

2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571737, Hainan, Peoples R China

关键词： New species;taxonomy

期刊名称：PHYTOTAXA （影响因子：1.171；五年影响因子：1.196 ）

ISSN： 1179-3155

年卷期： 2016 年 283 卷 2 期

页码：

收录情况： SCI

摘要： A new species of Carex sect. Rhomboidales, Carex concava, is described and illustrated from Hainan, China. The new species is similar to C. paracheniana but differs in having wider blades and longer sheaths of bracts; inflorescence with 3 spikes; terminal spike 2-6 cm long and with a 4-14 cm long peduncle; lateral spikes 3-6 cm long, loosely flowered and with 8-15 cm long peduncles; staminate glume ovate, 1-veined costa excurrent into a shortly awn ca. 0.3 mm; pistillate glume ovate, ca. 4 mm long, 1-veined costa excurrent into a awn ca. 1 mm; perigynia fusiform and green; nutlets inclined-oval, brownish black, with 3 angles deeply constricted at the middle and the side toward of spike-stalk deeply concave at base.

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