가 지 과 Solanaceae

1. 삭과이다.

2. 씨방은 4실이다 ····························································································································· 독말풀속

2. 씨방은 2실이다.

3. 꽃은 정생한다.

4. 꽃은 원추화서에 달리고 꽃부리는 깔때기형이다 ·····················································································담배속

4. 꽃은 원줄기 끝에 모여달리고 꽃받침통에 자주색 맥이 있다  ·································································292. 사리풀

3. 꽃은 액생한다.

5. 꽃은 종모양이며 삭과는 뚜껑모양으로 열린다 ·············································································276. 미치광이풀

5. 꽃은 나팔모양이며 삭과는 뚜껑모양으로 열리지 않는다  ····································································295. 피튜니아

1. 장과이다.

6. 열매는 자라는 꽃받침으로 싸여 있다

7. 꽃받침과 열매는 밀착되어 있다  ···································································································· 279. 가시꽈리

7. 꽃받침과 열매 사이에 넓은 공간이 있다.

8. 꽃받침은 갈라지지 않는다 ················································································································· 꽈리속

8. 꽃받침은 5 개로 깊게 갈려지고 밑부분에 5 개의 돌기가 있다 ································································287. 페루꽈리

6. 꽃받침은 자라서 열매를 싸지 않는다

9. 꽃밥은 붙어서 통처럼 된다

10. 꽃밥은 터진 구멍으로 나온다 ········································································································· 가지속

10. 꽃밥은 세로로 터진다 ············································································································ 288. 토마토

9. 꽃밥은 붙지 않는다.

11. 관목이다   ·····················································································································275. 구기자나무

11. 초본식물이다.

12. 열매는 둥글고 지름 1 cm 이내이다  ························································································ ·280. 알꽈리

12. 열매는 길이 5 cm 이상이며 맵다  ······························································································ 289. 고추