개별꽃속 Pseudostellaria PAX

1. 위쪽 2쌍의 잎은 접근하여 윤생한 것처럼 보인다. 꽃은 정생한다.

2. 소화경은 길이 1-2.5 cm 이며 줄로 돋은 털이 없고 꽃잎 끝이 갈라지지 않았다  ·············································311. 큰개별꽃

2. 소회경에 줄로 돋은 털이 있다.

3. 소화경의 길이는 잎의 길이와 비슷하거나 길다  ··········································································· 309+ 지리개별꽃

3. 소화경의 길이는 잎의 길이보다 짧다.

4. 꽃밥은 적색이며 꽃은 1 개씩 달라고 꽃잎 끝이 갈라지지 않았다  ·······················································310. 참개별꽃

4. 꽃밥은 황색이며 꽃은 1-5 개씩 달리고 꽃잎 끝은 갈라져 있다  ····························································309. 개별꽃

1. 위쪽 잎은 다소 떨어졌으며 꽃은 정생 또는 액생한다.

5. 잎 전체에 털이 있으며 중부 이상에 달린 잎은 난형 원저이다    ·······························································312. 긴개별꽃

5. 잎은 밑부분 이외에는 털이 없고 예저이다

6. 꽃이 진 다음 가지가 덩굴처럼 된다  ··························································································308. 덩굴개별꽃

6 덩굴로 되지 않는다 ·················································································································313. 숲개별꽃