시호속 Bupleurum LINN.

1. 잎자루 밑부분은 줄기를 감싸지 않는다 ································································································1350. 시호

1. 잎자루 기부는 줄기를 감싼다

2. 키는 40cm 마만이다. 뿌리에서 돋은 잎은 선형이고 너비 1-3mm 이다 ····················································1351. 등대시호

2. 키는 40cm 이상이다. 뿌리에서 돋은 잎은 너비 1cm 이상이다.

3. 잎은 넓은 피침형 또는 장타원형이며 너비 2-3.5 cm로서 구두창같이 생겼다 ·············································1352. 개시호

3. 잎은 너비 4.5-11 cm 이다 ·········································································································1353. 섬시호