며느리밥풀속 Melampyrum LINN.

1. 포는 녹색이고 잎은 피침상 장타원형 내지 난형이며 끝이 짧게 뾰족하다.

2. 꽃차례는 걸고 포에는 1~5썽의 바늘 같은 톱니가 있으며 꽃받침은 털이 없거나 다소 있다  ························348. 꽃며느리밥풀

2. 꽃차례는 뭉쳐 있거나 길어지고 포에는 여러 쌍의 실 같은 톱니가 있다.

3. 꽃받침은 털이 없거나 다소 있다 ····························································································349. 알며느리밥풀

3. 꽃받침은 털이 밀생한다 ···································································································350. 수염며느리밥풀

1. 포는 적자색이고 잎은 좁은 피침형 내지 넓은 피침형이며 끝이 길게 뾰족하다.

4. 잎은 좁은 피침형 내지 피침형이고 길이 2~4cm， 너비 3~4mm이며 포는 피침형이다 ···························351. 애기며느리밥풀

4. 잎은 넓은 피침형이고 길이 4-12 em， 너비 1 ~3.5em이며 포는 난형이다  ············································352. 새며느리밥풀