244 Menthaceae 



inch broad with a tube an inch or more 

 long, the rounded lobes crenately erose; 

 the later flowers small, inconspicuous and 

 pale. 



Dry sandy soil in the valley of the Bow 

 River at Banff, the showy flowers in May 

 and early June. 



MENTHACE.E 

 Mint Family 



Aromatic herbs mostly with 4-sided stems 

 and simple opposite leaves ; flowers irregular, 

 perfect, clustered, the inflorescence typically 

 cymose; calyx persistent, 5-toothed or lobed; 

 corolla with a short or long tube, the limb 

 4-5 -lobed, mostly 2-lipped, but some regu- 

 lar; stamens borne on the corolla tube, 

 typically 4. 



Calyx with a protuberance on the upper side. 



Corolla 2-lipped, the upper arched, tube long, blue. 



Scutellaria. 



Calyx without a protuberance on the upper side. 

 Corolla tube longer than the calyx; flower 2-lipped 

 purple. Prunella. 



