Common Name: 
Buttonbush

About 10 species of deciduous or evergreen shrubs or small trees.  Leaves opposite or whorled, margin entire, with triangular stipules.  Flowers small, 4-parted, in axillary globose heads.  Fruit separating into two 1-seeded nutlets.  Native to Asia, Africa and North and Central America.
Cephalanthus: Greek from kephale, head, and anthos, flower.  The flowers of these plants are closely packed into small, globose clusters, i.e., heads.

Pronunciation: 
sef-a-LAN-thus
Family: 
Rubiaceae