\ 



220 FLOWERS OF FIELD, HILL, AND SWAMP 



pale purple. Leaves, long-petioled, cut, the lower palmktely, 

 the upper into 3 divisions. Time, summer. 



Corolla, 2-lipped, the upper lip bearded. Lower lip in 3 

 divisions, spreading. Stamens, 4. Tall, leafy herbs, with 

 flowers whorled in the axils terminating the branches. 



90 



Z. Marrubidsfriifu has coarsely toothed, oblong leaves, with 

 a whitish corolla, shorter than the calyx-teeth. Flowers ia 

 whorls. 



New Jersey and southward. 



91 



Z. Sibiricus has a purplish corolla, much longer than the 

 calyx. Leaves, 3-parted, the divisions deeply cut. 



Waste grounds in Pennsylvania and westward. These are all 

 introduced species, from Europe and Asia. 



92. Self-heal 



Brunella vulgaris. — Family, Mint. Color, violet blue. 

 Lea-res petioled, long, narrow, wavy. Time, June to October. 

 Corolla, 2-lipped, the upper being arched and straight. 



A very common plant by roadsides and in pasture lands. It is 

 smart and cheery looking, though often sadly dusted and be- 

 draggled. The flowers are in clusters of threes, sessile, all in a 

 compact, terminal, clover- like head. Bract -like leaves grow 

 among them. Plant about 6 inches high. 



93. Hemp-nettle 



Ga/eopsis Tetrahit. — Lamily, Mint. Color, purplish or 



variegated. L^eaves, serrate, ovate, lime, August, September. 



Calyx and corolla, tubular. Upper lid of corolla arched, 



