接受名：Deyeuxia pyramidalis (Host) Veldkamp (accepted name)

异名：Agrostis arundinacea L. (synonym)、Arundo sylvatica Schrad. (synonym)、Calamagrostis arisanensis Honda (synonym)、Calamagrostis arundinacea (L.) Roth (synonym)、Calamagrostis arundinacea (L.) Roth var. brachytricha (Steud.) Hack. (synonym)、Calamagrostis arundinacea (L.) Roth var. ciliata Honda (synonym)、Calamagrostis arundinacea (L.) Roth var. hirsuta Hack. (synonym)、Calamagrostis arundinacea (L.) Roth var. latifolia (Rendle) Kitag. (synonym)、Calamagrostis arundinacea (L.) Roth var. robusta (Franch. et Sav.) Honda (synonym)、Calamagrostis arundinacea (L.) Roth var. sciuroides (Franch. et Sav.) Hack. (synonym)、Calamagrostis arundinaceae Roth var. robusta Raclaru (synonym)、Calamagrostis austrojeholensis Honda (synonym)、Calamagrostis brachytricha Steud. (synonym)、Calamagrostis brachytricha Steud. var. ciliata (Honda) Y. Ibaragi et H. Ohashi (synonym)、Calamagrostis collina Franch. (synonym)、Calamagrostis formosana Hayata (synonym)、Calamagrostis matsudana Honda (synonym)、Calamagrostis morrisonensis Hayata (synonym)、Calamagrostis niitakayamensis Honda (synonym)、Calamagrostis nipponica Franch. et Sav. (synonym)、Calamagrostis pyramidalis Host (synonym)、Calamagrostis robusta Franch. et Sav. (synonym)、Calamagrostis sciuroides Franch. et Sav. (synonym)、Deyeuxia ampla Keng (synonym)、Deyeuxia arundinacea (L.) P. Beauv. var. borealis (Rendle) P. C. Kuo et S. L. Lu (synonym)、Deyeuxia brachytricha (Steud.) Chang (synonym)、Deyeuxia collina (Franch.) Pilg. (synonym)、Deyeuxia formosana (Hayata) C. C. Hsu (synonym)、Deyeuxia henryi Rendle (synonym)、Deyeuxia hupehensis Rendle (synonym)、Deyeuxia matsudana (Honda) Keng (synonym)、Deyeuxia sylvatica (Schrad.) Kunth (synonym)

Deyeuxia matsudana (Honda) Keng in Sunyatsenia 6 (2) : 92. 1942; Hsu in Taiwania 16: 233. 1971; 台湾禾草271.图30. 1975; 台湾植物志5: 415. 1978. ——Calamagrostis malsudana Honda in Bot. Mag. Tokyo 49: 439. 444. 1926.

多年生，具根状茎。秆纤细，高20-30厘米。叶舌微小，顶端平截；叶片扁平，长约5厘米。圆锥花序开展，长约5厘米；小穗含1小花，长约3.5毫米；颖片披针形，先端锐尖，两颖近等长，第一颖具1脉，第二颖具3脉；外稃近等长于颖，披针形，顶端具3齿裂，具3脉，中脉延伸成芒，基盘两侧的柔毛长为外稃的1/2;内稃具2龙骨突起，顶端3齿裂，延伸小穗轴长约1.5毫米，具毛，鳞被先端尖锐，长约1毫米；花药长约2毫米。

特产我国台湾。生于中海拔林地。模式标本采自台湾能高山。

本文录自《台湾禾草》。