붓꽃과 Iridaceae

1. 줄기가 뚜렷하고 많은 꽃이 달린다.

2. 암술대는 수술보다 길게 밖으로 나와 있다 ································································································붓꽃속

2. 암술대는 갈라지지 않으며 흔히 수술 사이에 있다.

3. 수술대는 화피와 떨어져 있다 ······································································································ 664. 범부채

3. 수술대는 화피에 붙어 있다.

4. 수술대는 통부 밑에 붙어 있다 ································································································ 666. 등심붓꽃

4. 수술대는 화피통의 위쪽에 붙어 있다 ····················································································665. 글라디올러스

1. 꽃은 1개씩 달리며 땅 위에 나온 줄기는 없다 ··························································································650. 사프란

붓꽃속 Iris LINN.

1. 꽃줄기는 2 개씩 갈라지며 꽃은 분홍빛이 도는 보라색이다   ····································································   663. 대청부채

1. 꽃은 단정화서로서 단축된 총상화서이다.

2. 외화피에 부속물이 없다.

3. 포는 꽃 밑에 바로 붙지 않고 가장자리는 녹색이며 열매를 싸지 않는다.

4. 잎은 비틀리지 않는다.

5. 내화피는 심장형이고 끝은 털같이 가늘다  ·················································································658. 부채붓꽃

5. 내화피는 심장형이 아니다.

6. 단정화서이며 꽃줄기는 대개 갈라지지 않는다.

7. 꽃은 황색이고 근경은 황백색이며 뿌리혹균이 있다.

8. 꽃은 꽃줄기 끝에 1 개 달린다   ························································································653. 금붓꽃

8. 꽃은 꽃줄기 끝에 2 개 달리고 포는 3 개 달린다.

9. 잎의 기부는 보라색이고 꽃부리통은 길이 5mm 이하이다   ···················································652. 노랑붓꽃

9. 잎의 기부는 희고 꽃부리통은 길이 Smm 이상이다  ···················································· 652+. 노랑무늬붓꽃

7. 꽃은 보라색이고 근경은 갈색이며 뿌리혹균이 없다      ·····························································651. 각시붓꽃

6. 총상화서로서 꽃줄기는 갈라진다.

10. 잎에 주맥이 없고 꽃줄기는 속이 비어 있으며 화피 가부에 돌기가 2개 있다.

11. 꽃줄기는 갈라지고 근경은 갈색이며 꽃은 보라색이다 ···················································· 661+. 시베리아붓꽃

11. 꽃줄기는 갈라지지 않고 근경은 황갈색이며 잎의 기부는 적자색이다   ············································661. 붓꽃

10. 잎에 주맥이 있고 꽃줄기는 충실하며 화피에 돌기가 없다.

12. 꽃줄기는 3~4회 갈라진 후 그 끝에 꽃이 달린다. 외화피는 담황색이고 갈색 줄무늬가 있다   ··········656. 노랑꽃창포

12. 꽃줄기는 갈라지지 않고 끝에 2~3 개의 꽃이 달린다 꽃은 적자색 또는 자색이며 기부는 황색이다.

13. 잎의 주맥은 뚜렷하고 화피 열편은 적자색이며 꽃밥은 희다     ················································660. 꽃창포

13. 주맥은 희미하고 화피는 자주색이며 꽃밥은 황색이고 가장자리는 자주색이다   ·························659. 제비붓꽃

4. 잎은 2~3 회 비틀린다       ·······································································································657. 타래붓꽃

3. 포는 꽃 밑에 달라고 가장자리는 자주색 또는 적자색이며 열매를 감싼다.

14. 포의 가장자리는 자주색이고 꽃은 연보라색이며 수술대는 흰색이고 삭과는 아구형이며 화피 열편에 그물무늬가 있다 ················655. 솔붓꽃

14. 포의 가장자리는 붉고 꽃은 자주색이며 굵은 흰 줄이 있다. 삭과는 도란형이다    ···································654. 난장이붓꽃

2. 외화피에 부속물이 있다.

15. 외회피에 닭벼슬 같은 부속물이 있다     ························································································662. 연미붓꽃

15. 외화피에 털이 있다 ······················································································································· 만주붓꽃