中国石灰岩地区霉草科一新记录种——星状霉草

蒋日红<sup>1; 2</sup>; 吴望辉<sup>1; 2</sup>; 农东新<sup>1; 2</sup>; 许为斌<sup>1*</sup>

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中国石灰岩地区霉草科一新记录种——星状霉草
蒋日红^1,2, 吴望辉^1,2, 农东新^1,2, 许为斌^1*
1. 广西壮族自治区中国科学院广西植物研究所, 广西桂林 541006;2.广西师范大学生命科学学院, 广西桂林 541004

摘要:

首次报道了中国石灰岩地区霉草科喜荫草属一新记录种——星状霉草Sciaphila stellata Aver.,本种与国产的大柱霉草S.megastyla Fukuyama et Suzuki在外形上较相似,但不同在于前者茎具不明显的棱,叶片苞片状,卵形或三角形,顶端钝,花序仅排列在轴的一侧; 雄花与雌花花被片具有明显的差异,在雄花中花被片狭楔形到丝状,而在雌花中却为宽楔形,花柱稍超过子房。本文给出了国产喜荫草属的分种检索表及各种的分布地点。

关键词: 星状霉草喜荫草属霉草科石灰岩植物区系新记录中国

DOI：10.3969/j.issn.1000-3142.2011.01.003

分类号:Q949

Fund project:

Sciaphila stellata Aver, a newly recorded species of Triuridaceae from limestone area in China

JIANG Ri-Hong^1,2, WU Wang-Hui^1,2, NONG Dong-Xin^1,2, XU Wei-Bin^1*

1. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences, Guilin 541006, China;2.College of Life Sciences, Guangxi Normal University, Guilin 541004, China

Abstract:

Sciaphila stellata is reported as a new record to China from limestone area. It is similar to S.megastyla Fukuyama et Suzuki,but differs in its stems indistinctly ribbed,leaves bract-like,ovate to triangular,apex obtuse,inflorescence secund,perianth-segments of male flowers narrowly cuneate to filiform,ones of female flowers broadly cuneate,style slightly exceeding the ovary. A key to the species and distributions of Sciaphila Bl.in China is provided.

Key words: Sciaphila stellata Aver. Sciaphila Bl. Triuridaceae limestone flora new record China