22. 박목 Cucurbitales

박과 Cucurbitaceae

1. 수술대는 합쳐져서 1 개로 되었다.

2. 잎은 장상복엽이며 흰 털이 있으나 곧 없어진다 ···················································································· 1240. 돌외

2. 잎은 단엽이며 가시같은털이있다 ·································································································· 1241. 가시박

1. 수술은 떨어져있거나 밑부분이 합쳐져 있다.

3. 수술대는 3 개이지만 간혹 2 개이거나 4 개 이상인 것도 있다.

4. 약실은 꼬부라져서 S자형또는 U자형으로 되어있다.

5. 꽃부리는 종모양이다 ·············································································································· 1242. 호박

5. 꽃부리는 수레바퀴형이다.

6. 꽃부리는 실처럼 갈라져있다 ··································································································· 하늘타리속

6. 꽃부리는 갈라지지 않았다.

7. 수꽃의 꽃받침통은 길게 자라며 꽃밥은 흔히 둥글게 붙어있다 ···························································· 1243. 박

7. 수꽃의 꽃받침통은 짧으며 꽃밥은 떨어져 있거나 영성하게 붙어있다.

8. 수술대는 꽃받침통부의 목에 달려있다 ········································································ 여주속 Momordim

8. 수술대는 꽃받침통에 달려있다.

9. 수꽃은 총상으로 배열되어 있다 ················································································ 1245. 수세미오이

9. 수꽃은 1 개씩달리거나 속생한다. 꽃받침잎은 송곳같이 뾰족하고 톱니가 없다.

10. 약격은 꽃밥보다 길고 덩굴손은 1 개이다 ············································································· 참외속

10. 약격은 길지않고 덩굴손은 2~3 개로 갈라진다 ·································································· 1246. 수박

4. 약실은 곧거나 약간 꼬부라진다.

11. 밑씨는 위에서 밑으로 처져있다 ································································································· 1247. 산외

11. 밑씨는 수평으로 달려있다 ······································································································· 1248. 새박

3. 수술대는 5개가 보통이지만 4개인 것도 있다.

12. 종지는 수평으로 달려있다 ········································································································· 1249. 왕과

12. 종자는 위에서 밑으로 처져있다 ······························································································ 1250. 뚜껑덩굴