풀솜대속 Smilacina DESF.

1. 식물체에 털이 없거나 약간 있다.

2. 보통 잎은 4개 또는 그 이상이다.

3. 잎은 밑으로 갑자기 좁아져서 짧은 잎자루가 되며 꽃은 황색 내지 자주색이다 ·············································· 531. 자주솜대

3. 잎의 밑은 줄기를 감싸며 꽃은 녹색이고 복총상화서이다 ···········································································532. 민솜대

2. 보통잎은 3 개이고 총상화서이다    ··································································································533. 세잎솜대

1. 식물체에 털이 많다   ························································································································534. 풀솜대