692 



A TEXT-BOOK OF BOTANY. 



FIG. 382. Turtle-head (Ckelone glabra), a perennial herb with lanceolate, serrate, 

 opposite leaves and short, terminal spikes of whitish or purplish flowers. The corolla is 

 bilabiate, the mouth slightly open, the upper lip broad and arched, suggesting the head of 

 a turtle or snake, hence the origin of the common name. Bureau of Plant Industry, U. S. 

 Department of Agriculture. 



