臺灣新歸化莎草——刺桿莎草

Cyperus surinamensis Rottb., A Newly Naturalized Sedge Species in Taiwan

刺桿莎草（Cyperus surinamensis Rottb.,新擬中名）為新歸化於台灣北部之莎草科植物。本文描述其分類特徵、分佈、生長環境，並與相似種——頭穗莎草（Cyperus eragrostis Lam.）做比較，提出桿、穗枝、小穗，及瘦果在SEM下的差異。

Cyperus surinamensis Rottb., a sedge species of tropical and subtropical American origins, has recently been naturalized in the northern part of Taiwan. The present study provides taxonomic description, line drawings and other relevant information. In addition, a comparison with similar species C. eragrostis Lam. is given.