尖峰苔草（莎草科菱形果薹草组），中国海南一新物种。
Carex jianfengensis (Carex sect. Rhomboidales, Cyperaceae), a New Species from Hainan, China.
作者信息
Yang Hubiao, Li Xiaoxia, Wang Wenqiang, Bai Changjun, Liu Guodao
机构信息
Tropical Crops Genetic Resources Institute, Chinese Academy of Tropic Agricultural Sciences, Danzhou, Hainan, People's Republic of China.
Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, People's Republic of China.
出版信息
PLoS One. 2015 Sep 23;10(9):e0136373. doi: 10.1371/journal.pone.0136373. eCollection 2015.
A new species of Carex sect. Rhomboidales, C. jianfengensis, is described and illustrated from Hainan, China. The new species is similar to C. zunyiensis but differs in having involucral bracts sparsely hispid and with ca.1 cm long sheaths; inflorescence with 4 spikes, terminal spike ca. 2.5 cm long, lateral spikes 2-3.5 × 0.7-1 cm; staminate glumes narrowly ovate, ca. 5 mm; pistillate glumes triangular-lanceolate, 5-7 mm; perigynia 6-8 × 3 mm and pubescent on veins; nutlet 4-5 mm long, rhombic-ovoid, trigonous, base with shortly stipitate, apex abruptly contracted into a erect short beak, and not expanding into an annulate orifice.
描述并图示了中国海南莎草属菱形果组的一个新物种——尖峰苔草。该新物种与遵义苔草相似，但不同之处在于其总苞苞片疏生糙硬毛且具约1厘米长的叶鞘；花序具4个穗，顶生穗长约2.5厘米，侧生穗2 - 3.5×0.7 - 1厘米；雄花鳞片狭卵形，长约5毫米；雌花鳞片三角状披针形，长5 - 7毫米；果囊6 - 8×3毫米，脉上具柔毛；小坚果长4 - 5毫米，菱形卵形，三棱形，基部具短柄，顶端突然收缩成直立的短喙，且不扩展成环状孔口。
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