LABIATE. ■ 163 



2. T. OCCidenta'le, Gr., is loosely imbesoent, and the 

 calyx is villous with viscid 7iairs.—S, W. Ontario. 



8. ISAK'TUirs, Michx. False Pennyroyal. 



I. eseru'lenSj Michx. A low, branohing, clammy-pubes- 

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

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



3. lUEN'TIIA, L. Mint. 



1. M. vir'idls, L. (Speabmint.) Flowers in a narrow 

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

 unequally serrate, sessile. — Wet places. 



2. M. piperi'ta, L. (Peppekmint.) 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 clusters, 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. ("Whokled Mint.) Flowers in globular 

 clusters in the axils of leaves ; the uppermost axils not 

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

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



5. M. arvensis, L. (Ooen 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. lYe'OPrs, L. Watek Horehodnd. 



1. L. Virgln'ieus, L. (Bugle -weed.) Calyx-teeth 4, 

 bhmlish. Stems obtusely 4-anglcd, 6-18 inches high, pro- 

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

 late, toothed, — Moist places. 



2. L. sinua'tus, Ell. (L. JSuropceus, var. sinuatus, Gray.) 

 Ca/yx-teeth 5, sharp- pointed. Stem sharply 4-angled, l-.'i 



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

 — "Wet places. 



