广西蕨类植物新记录属——白桫椤属

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,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.%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. brunoni-ana(Hook. ) R. M. Tryon. According to the original literature and specimens from Guangxi, the characteristics of this species were described and illustrated.