禾本科棒头草属分种检索表

1.颖片之芒短于或稍长于小穗…………………………………………………………………………1.棒头草  P. fugax Nees ex Steud.
1.颖片之芒长为小穗的3—4倍。
  2.颖片先瑞2浅裂,裂片先端稍尖; 外稃具短芒………………………………………………… 2.长芒棒头草  P. monspeliensis (Linn.) Desf.
  2.颖片先端2深裂,裂片先端钝圆; 外稃无芒…………………………………………………… 3.裂颖棒头草  P. maritimue Willd.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith