广西蕨类植物新记录属——白桫椤属

农东新1; 2; $21; 2; $21; 2; $21; 3*

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广西蕨类植物新记录属——白桫椤属
农东新1，2，蒋日红1，2，吴磊1，2，许为斌1，3*
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;3.华南农业大学林学院，广州 510642

摘要:

报道了广西蕨类植物一新记录属——白桫椤属。该属植物以茎干直立，乔木状；叶大型，簇生于茎干顶端，〖JP2〗叶柄平滑、有疣突或皮刺，基部鳞片的细胞一式；叶背灰白色；叶脉分叉，2～3叉；无囊群盖等为主要特征。目前该属植物在广西首次记录到白桫椤。根据原始文献及广西的标本对该种进行了描述，并提供了墨线图。

关键词: 白桫椤属白桫椤桫椤科新记录珍稀植物广西

DOI：

分类号:Q948.5

Fund project:

Sphaeropteris， a newly recorded genus of tree ferns from Guangxi

NONG DongXin1，2， JIANG RiHong1，2， WU Lei1，2， XU WeiBin1，3*

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;3. 3.College of Forestry， South China Agricultural University， Guangzhou 510642， China

Abstract:

Sphaeropteris was reported for the first time from Guangxi. The genus was distinguished by its erect，tree like trunks；fronds large，arranged in a terminal crown；stipes smooth， scaly or spiny，stipes scales cells conform type；veins 2-3 forked；lower surface pale；sori without indusia. There was only one species recorded in Guangxi，namely S.brunoniana(Hook.) R.M.Tryon. According to the original literature and specimens from Guangxi，the characteristics of this species were described and illustrated.

Key words: Sphaeropteris S.brunoniana Cyatheaceae new record rare plant Guangxi