Additional Notes on the Begonia Sect. Petermannia (Begoniaceae) from China

doi:10.7677/ynzwyj201514154

Abstract

Abstract:

Begonia pellionioides YM. Shui & WH. Chen, a new species of the genus Begonia L. (sect. Petermannia (Klotzsch) A. DC., Begoniaceae), is described and illustrated. The new species is endemic to limestone areas in Southeastern Yunnan Province, China, and is most similar to Begonia hainanensis Chun & F. Chun but distinguished by its more elongated leaves with cuneate base and acuminate to caudate apex, tepals adaxially with spiny hairs and sharply triangular capsulewings with truncate superior margin. Besides, the unknown flower morphology of previously published Begonia sublongipes YM. Shui in Begonia sect. Petermannia is described.

Key words: Begonia, Begonia pellionioides, Begoniaceae, section Petermannia, Yunnan, China

摘要：

报道了中国秋海棠属等翅组一新种，即赤车叶秋海棠（Begonia pellionioides YM. Shui & WH. Chen）。此新种特产于云南东南部的石灰岩山生境，与海南秋海棠（Begonia hainanensis Chun & F. Chun）相似，但不同在于其叶片较长，叶基楔形，叶尖渐尖至尾尖，花被片背面具刺毛，蒴果具上边缘平截的三角形翅。此外，补充描述了秋海棠属等翅组拟长柄秋海棠（Begonia sublongipes YM. Shui）的花部特征。

关键词: 秋海棠属, 赤车叶秋海棠, 拟长柄秋海棠, 秋海棠科, 等翅组, 云南, 中国

CLC Number:

Q 949

WANG Jian, CHEN Wen-Hong, HUGHES Mark, YANG Zhen-Zhen, SHUI Yu-Min. Additional Notes on the Begonia Sect. Petermannia (Begoniaceae) from China[J]. Plant Diversity, 2015, 37(05): 563-568.

汪健, 陈文红, HUGHES Mark, 杨珍珍, 税玉民. 中国秋海棠属等翅组的补遗[J]. Plant Diversity, 2015, 37(05): 563-568.

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