수수속 Sorghum MOENCH

1. 마디에 털이 없고 화서지는 다시 1-2회 갈라진다.

2. 1 년초이며 지하경이 없다          ········································································································65. 수수

2. 다년초이며 지하경이 길게 자란다 ····························································································· 65+. 시리아수수

1. 마디에 털이 있고 화서지는 갈라지지 않는다   ·························································································64. 수수새