ABRONIA 



Flowers. — Pink, small, in an umbel-like head, surrounded by an 

 involucre of about five bracts. 



Calyx. — Salver-shaped, looks like a corolla; border five-lobed; open 

 by day. 



Corolla. — None. 



Stamens. — Five, inserted on the calyx tube; style included. 

 Ovary. — One-celled, containing one ovule and forming a seed-like 

 fruit. 



Ahronia is a genus of about fifteen species, all native to western 

 North America. Like the four-o'clock, the flower has no corolla, 

 but its calyx looks like one. The leaves are opposite and at every 

 node one leaf is larger than the other. 



Ahronia umbellata is a comrnon plant along the California coast, 

 often making masses of deep-pink on the beach. 



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