김의털속 Festuca LINN.

1. 1 ~2년초로서 소수는 3~5개의 소화로 되어 있으며 밑으로 처지지 않고 거의 서 있다.

2. 호영에 털이 없고 외포영은 길이 1 ~1.5mm 이다  ·················································································153. 들묵새

2. 호영에 털이 있고 외포영은 길이 1.5~2mm이다  ··················································································154. 큰묵새

1. 다년초이다

3. 잎은 안으로 말려서 너비가 0.5~3mm이다.

4. 원추화서는 조밀하고 곧추선다.

5. 줄기는 처음에 비스듬히 자라고 새싹은 일부 외초적으로 갈라진다 ······················································155. 왕김의털

5. 줄기는 밑에서부터 곧추 자라고 새싹은 내초적으로 갈라진다   ······························································156. 김의털

4. 원추화서는 엉성하고 옆으로 처진다.

6. 맨 밑의 소화는 길이 4.5-6mm 이고 보통 까락이 있다  ·······························································149. 김의털아재비

6. 맨 밑의 소화는 길이 3~4mm 이고 까락이 없다 ···············································································151. 산묵새

3. 잎새는 편평하거나 다소 안으로 말려서 너비가 3mm 이상이다

7. 잎은 너비 2-4mm이고 가장자리가 다소 말려든다.

8. 키는 15-30 cm로서 고산식물이다     ····························································································152. 개묵새

             8. 키는 50-100 cm로서 외래목초이고 잎은 너비 4~8mm이다   ··············································   156+. 넓은잎김의털

7. 잎은 너비 5-12mm로서 편평하다  ·······························································································155. 왕김의털