164 COMMON CANADIAN WILD PLANTS. 



3. L lu'eidus, Turcz., var. America' nus, Gray. Calyx- 

 teeth 5, very acute. Corolla hardly exceeding the calyx. 

 Stem strict, short, 2-3 feet high. Leaves lanceolate or 

 oblong-lanceolate, sessile or nearly so, sharply and coarsely 

 serrate. N.W. 



5. HEDEO'MA, Pers. MOCK PENNYROYAL. 



1. H. pulegioi'des, Pers. (AMERICAN PENNYROYAL). Stem 

 5-8 inches high, branching, hairy. Leaves oblong-ovate, 

 petioled, obscurely serrate. Whorls few-flowered. Plant 

 with a pungent aromatic odour. Open woods and fields. 



2. H. his'pida, Pursh., has the leaves sessile, linear, and 

 entire, and the calyx dilate and hispid. Not common. 



6. COLLIffSO'NIA, L. HORSE-BALM. 



C. Canaden'siS, L. (RICH- WEED. STONE-BOOT.) Stem 

 smooth or nearly so, 1-3 feet high. Leaves serrate, pointed, 

 petioled, 3-6 inches long. Rich woods. 



7. HYSSO'PUS, Tourn. HYSSOP. 



H. Offieina'lis, L. Escaped from gardens in a few locali- 

 ties. Leaves lanceolate or linear, entire. 



8. PYCNAtf'THEMUM, Michx. MOUNTAIN MINT. BASIL. 



1. P. laneeola'tum, Pursh. Stem 2 feet high, smoothish 

 or minutely pubescent. Leaves lanceolate or lance-linear, 

 entire. Heads downy. Calyx-teeth short. Lips of corolla 

 very short. Dry soil. 



2. P. mu'tieum, Pers., var. pilo'SUm, Gr. Hoary with 

 loose pubescence. Leaves oblong - lanceolate, denticulate. 

 Bracts and calyx-teeth villous-pubescent. Heads larger 

 than in No. 1. S. W. Ontario. 



9. SATUKE IA L. SAVORY. 



S. horten'sis, L. (SUMMER SAVORY.) Stem pubescent. 

 Clusters few-flowered. Escaped from gardens in a few 



localities. 



10. MONAR'DA, L. HORSE-MlNT. 



1. M. did'yma, L. (OSWEGO TEA.) Corolla bright red, 

 very showy. The large outer bracts tinged with red. 

 Along shaded streams. 



