夹竹桃属
鸡骨常山属

[ noun ]
genus of evergreen trees or shrubs with white funnel-shaped flowers and milky sap; tropical Africa to southeastern Asia and Polynesia
<noun.plant>

Alstonia \Alstonia\ n.
1. 1 genus of evergreen trees or shrubs with white
funnel-shaped flowers and milky sap; tropical Africa to
southeast Asia and Polynesia.

Syn: genus {Alstonia}.
[WordNet 1.5]