쇠톨피속 Polypogon DESF.

1. 포의 까락은 포영의 길이와 비슷하거나 짧다       ······················································································200. 쇠돌피

1. 포의 까락은 포 길이의 2~4 배이다·····································································································201. 갯쇠돌피