딱총나무속 Sambucus LINN.

1. 꽃차례는 반원형이며 식물체에 털이 없다  ···················································································438. 넓은잎딱총나무

1. 꽃차례는 넓은 난형 또는 원추형이다.

2. 잎과 꽃차례에 털이 없다.

3. 톱니는 안으로 꼬부라진다.

4. 꽃차례는 밑으로 처진다    ····································································································434. 말오줌나무

4. 꽃차례는 처지지 않는다     ········································································································435. 덧나무

3. 톱니는 안으로 꼬부라지지 않는다.

5. 꽃차례에 입상의 작은 돌기가 없다 ························································································· 437+. 정딱총나무

5. 꽃차례에 입상의 작은 돌기가 있다    ···························································································437. 딱총나무

2 잎과 꽃차례에 털이 있다.

6. 씨방에 털이 없다   ················································································································436. 지렁쿠나무

6. 씨방과 열매에 털이 있다  ··································································································  436+. 털지렁쿠나무