LABIATE. 163 



2. T. OCCldenta'le, Gr., is loosely pubescent, and the 

 calyx is villous with viscid hairs. — S. W. Ontario. 



«. ISAN'THTS, Michx. False Penntkoyal. 



I. eSBPU'leus, Michx. A low, branching, clammy-pubes- 

 cent annual. Leaves lance-oblong, 3-nerved, nearly entire. 

 Peduncles axillary, 1-3-flowered. — Gravelly soil. 



3. HIEN'THA, L. MINT. 



1. M. vir'idis, L. (Spearmint.) Mowers in a narrow 

 terminal spike. Leaves ovate-lanceolate, ■wrinkled, veiny, 

 unequally serrate, sessile. — Wet places. 



2. M. piperi'ta, L. (Peppermint.) Flowers in loose inter- 

 rupted spikes. Leaves ovate or ovate-oblong, acute, petioled- 

 Plant smooth. — Wet places. 



3. M. Canadensis, L. (Wild Mint.) Flowers in axil- 

 lary whorled dusters, the uppermost axils 'without flowers. 

 Stem more or less hairy, with ovate or lanceolate toothed 

 leaves on short petioles. Var. glabra'ta, Benth. , is smooth- 

 ish, and has a rather pleasanter odour. — Sandy wet places. 



4. M. sati'va, L. (Whorled Mint.) Flowers in globular 

 clusters in the axils of leaves ; the uppermost axils not 

 flower-bearing. Leaves petioled, ovate, sharply serrate. 

 Calyx with very slender teeth. — Atl. Prov. (Int. from Eu.) 



5. M. arvensis, L. (Corn Mint.) Flowers as in M. 

 sativa, but leaves smaller, obtusely-serrate, and teeth of the 

 calyx short and broader. — Atl. Prov. (Int. from Eu.) 



4. ITC'OPES, L. Water Hobehodnd. 



1. L. Virgin'ieus, L. (Bugle -wded.) Calyx-teeth 4, 

 bluntish. Stems obtusely 4-angled, 6-18 inches high, pro- 

 ducing slender runners from the base. Leaves ovate-lanceo- 

 late, toothed, — Moist places. 



2. L. sinua'tUS, Ell. {L. EuropcBus, var. sinuatus, Gray.) 

 Calyx-teeth 5, sharp-pointed. Stem sharply M-angled, 1-3 

 feet high. Leaves varying from cut-toothed to pinnatifid. 

 — Wet places. 



