164 COMMOX CANADIAN AVILD PLANTS. 



3. L. lu'eidUS, Turcz., var. Ameriea'nus, Gray. Calyx- 

 teeth 5, Yery acute. Corolla hardly exceeding "the calyx. 

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

 ohlong-lauceolate, sessile or nearly so, 'sharply and coarsely 

 serrate. — N.W. 



5. HEDEO'MA, Pera. MoOK Penntroyal. 



1. H. pulegioi'des, Pers. (American Pennyroyal). Stem 

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

 petioled, obscurely serrate. Whorls fe-vv-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 ciliate and hispid. — Not common. 



6. COLl,ISSO'JiIA, L. Horse-Balm. 

 C. Canaden'sis, L. (Eich-weed. Stone-root.) Stem 

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

 petioled, 3-6 inches long. — Rich woods. 



7. HVSSO'PUS, ToHi-n. Hyssor. 

 H. offieina'lis, L. Escap_ed from gardens in a, few locali- 

 ties. Leaves lanceolate oi? limfear, entire. 



8. PTCNAX'THEMIIM, Michx. MOUNTAIN Mint. Basil. 



1. P. laneeola'tum, Parsh. 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. 5. mu'tieum, Pers., var. pilo'Sum, Gr. Hoary with 

 loose pubescence. Leaves oblong - lanceolate, denticulate. 

 Bracts and calyx-teeth villous-pubesoent. Heads larger 

 than in No. 1. — S. W. Ontario. 



9. SAXITKE'IA. L. SAVORY. 

 S. horten'sis, L. (Summer Savory.) Stem pubescent. 

 Clusters few-flowered. — Escaped from gardens in a few 

 localities. 



1». lunXAR'DA, L. Horse-Mint. 



1. M. dld'yma, L. (Oswego Tea.) Corolla bright red, 

 very showy. The large outer bracts tinged with red. — 

 Along shaded streams. 



