294 LABIATE. (MINT FAMILY.) 



1. TEITCRIITM, L. Germander. 



Herbs: less aromatic than most genera, with leaves variously cut and 

 flowers spicate or solitary and axillary. 



* Leaves undivided : flowers in naked terminal spikes or racemes : calyx moder- 



ately 5-lobed; two lower teeth triangular-subulate; three upper ovate. 

 1. T. oeoidentale, Gray. Loosely pubescent, branched, a foot or two 

 high : leaves 1 or 2 inches long, ovate-oblong to broadly lanceolate, sharply 

 serrate : corolla 4 or 5 lines long, purple, rose or cream-color : calyx villous 

 with viscid hairs. — Synopt. Fl. ii. 349. T. Canadense of the Western 

 Reports. Nebraska to New Mexico and California. 



* * Leaves multifld or incised: flowers solitary and axillary, the uppermost 



leaves more or less bract-like: calyx almost 5-parted into subulate-lanceolate 



2. T. laciniatum, Torr. Glabrous or hirsute-pubescent, much branched, 

 a span or so high : leaves pinnately 3 to 7-parted into narrow linear entire or 

 2 to 3-lobed or toothed divisions, rather rigid; the floral much crowded, 

 3-parted : corolla 6 to 10 lines long, pale blue or lilac, with spatulate lower 

 lobe much surpassing the calyx. — Ann. Lye. N. Y. ii. 231. Plains of Colo- 

 rado to Arizona and W. Texas. 



2. MENTHA, 1 Tourn. Mint. 



Odorous herbs, mostly spreading by slender creeping rootstocks : flowers 

 small, whitish or purplish, in ours glomerate in the axils of leaves. 



1 • M. Canadensis, L. Villous-hairy : stem often simple : leaves varying 

 from oblong-ovate to oblong-lanceolate, sharply serrate, acute, generally taper- 

 ing into the petiole : inflorescence consisting of distant sessile verticillastrate 

 glomerules in the axils of the leaves, the uppermost axils flowerless : calyx 

 hairy ; the short teeth triangular-subulate. — Wet places, throughout the con- 

 tinent, chiefly towards the north. Odor of Pennyroyal. 



Var. glabrata, Benth., has leaves and stem almost glabrous, the former 

 sometimes very short-petioled, and a sweeter scent, as of Monarda. — Same 

 range. 



3. LYCOPUS, Town. Water Horehot/nd. Bugle-weed. 



Gtpst-wort. 



Mint-like, but bitter and only slightly aromatic ; with sharply toothed or 

 lobed leaves, and small white or whitish flowers in their axils, in sessile capi- 

 tate-verticillastrate glomerules, the uppermost axils flowerless. 

 * Stoloniferous ; long filiform runners produced from the base of the stem: calyx- 

 teeth mostly 4. 



1. L. VirginiCUS, L. Glabrous or somewhat pubescent : stem obtusely 

 angled, 6 to 24 inches high : leaves ovate or oblong-lanceolate, coarsely serrate 



1 Doubtless some of the common introduced species have become established within our 

 range. 



