246 Menthaceae 



or oblong-lanceolate, obtuse or subacute at 

 the apex, usually narrowed at the base, thin, 

 entire or crenate, 1-4 inches long. Flowers 

 'in dense terminal spikes J-i inch long, be- 

 coming 2-4 inches in fruit; corolla violet- 

 purple, or sometimes pink or white, J J 

 an inch long, twice as long as the purplish- 

 green calyx. 



Common throughout the region in moist, 

 open or shaded places at the lower altitudes, 

 frequently forming clumps of considerable 

 size; flowering throughout the summer. 



Erect, usually slender, simple 

 ota.cnys 



palustris L. or somewhat branched, hairy 

 Marsh throughout; 1-4 feet high. 



Wound- Leaves lanceolate, sessile or very 



short petioled, acuminate or 

 acute at the apex, wedge-shaped or cor- 

 date at, the base, 2-5 inches long, J-i inch 

 wide, crenulate or dentate, flowers clustered, 

 forming an elongated, interrupted spike, or 

 sometimes in the axils of the upper leaves, 

 6-10 in a whorl; calyx hairy, its slender 



