잔대속 Adenophora FISCH.

1. 잎은 윤생한다.

2. 꽃받침잎은 선형이며 꽃차례는 윤생한다.

3. 식물체에 긴 털이 없고 잎은 위에서는 호생하며 꽃은 길이 13~22mm 이다 ···················································· 502. 잔대

3. 식물체에 털이 많으며 꽃부라는 길이 lcm 정도이다   ·············································································503. 털잔대

2. 꽃받침은 피침형이며 꽃차례는 윤생하지 않는다.

4. 잎은 3~4 개씩 윤생하고 꽃받침에 톱니가 있다    ··············································································504. 넓은잔대

4. 잎은 5 개씩 윤생하지만 위에서는 호생하며 꽃받침에 톱니가 없고 꽃부리는 길이 15 mm 정도이다  ····················505. 왕잔대

1. 잎은 호생한다.

5. 잎자루가 길며 잎은 심장저이고 꽃부리는 길이 3cm 이상이다.

6. 꽃은 길이 4 cm， 지름 3cm이다   ··························································································506. 도라지모시대

6. 꽃은 길이 2~3 cm， 지름 lcm 이상이다        ····················································································507. 모시대

5. 잎자루는 없거나 lcm 이하이다.

7. 꽃부리는 끝이 훨씬 넓다.

8. 꽃부리는 윗부분이 넓은 종모양이며 밑으로 처지고 길이 1 ~1.5cm 이다  ···········································508. 진퍼리잔대

8. 꽃은 종모양이며 윗부분이 넓고 길이 2.2 cm 정도로서 위로 향한다  ····················································509. 수원잔대

7. 꽃부리는 끝부분이 현저하게 넓지 않다.

9. 잎은 피침형 또는 넓은 피침형이다.

10. 잎은 피침형이며 예저이고 호생하며 아대생 또는 윤생하기도 한다  ················································510. 두메잔대

10. 잎은 넓은 피침형이고 심장저이다   ······················································································511. 나리잔대

9. 잎은 난형， 난원형 또는 타원형이다.

11. 꽃받침잎은 길이 3-5mm 이고 잎은 둥근 난형이다   ···································································512. 둥근잔대

11. 꽃받침잎은 길이 7mm 이상이다.

12. 꽃받침잎에 흰 털이 밀생하며 잎은 난형이다    ·········································································513. 당잔대

12. 꽃받침잎에 털이 없고 꽃부리는 길이 2cm이고 잎은 도란상타원형이다    ···········································514. 섬잔대