ūnĭ-caulis — Lewis & Short
ūnĭ-caulis, e, adj.id.,
I having a single stalk:
genus carduorum silvestrium,Plin. 20, 23, 99, § 262:
faba leguminum,id. 18, 7, 10, § 57:
cuminum,id. 19, 10, 57, § 176.