276 SYSTEMATIC BOTANY. 



whorls; calyx hairy; stamens exserted. In wet grounds, 1-2 feet high. 

 July-September. 



2. M. VIRIDIS (Spearmint}. Stem smooth, upright, with erect branches ; 

 leaves ovate-lanceolate, acute, unequally serrate, smooth ; flowers pale pur- 

 ple, in distinct, axillary whorls, arranged in slender, interrupted spikes ; 

 calyx-teeth somewhat hairy. Wet grounds, 1-2 feet high. July. 



3. M. PIPERITA (Peppermint}. Smooth ; stem purplish, erect, branch- 

 ing ; leaves ovate, acute, serrate, petiolate, dark green ; flowers purplish, in 

 dense whorls, forming compact spikes ; bracts lanceolate. In wet grounds, 

 2-3 feet high. July. 



3. Lycopus. Calyx tubular, 4-5-toothed. Corolla campanulate, 

 with 4 subequal lobes ; upper segment broadest, emarginate. Stamens 

 2, distant, sometimes with 2 sterile rudiments. Style straight. Achenia 

 smooth, with thickened margins, if 



1. L. EUROP^US (Water Hoarhound). Stem sharply 4-angled, branch- 

 ing ; leaves oblong-lanceolate, tapering at both ends, petiolate ; lowest pin- 

 natifid ; uppermost linear and nearly entire ; flowers small, white, in dense, 

 axillary whorls ; calyx-teeth 5. In low grounds, io'-i8' high. August. 



2. L. VIRGINICUS (Bugle Weed). Stem obtusely 4-angled, with concave 

 sides ; leaves ovate-lanceolate, or oblong, coarsely toothed, on short peti- 

 oles ; flowers small, purplish white, in few-flowered, axillary whorls ; calyx- 

 teeth 4, ovate, obtuse. In low grounds, io'-i5' high. July-August. 



4. Monarda. Calyx elongated, tubular, 15 -nerved, 5-toothed. 

 Corolla tubular, with a somewhat inflated throat. Limb strongly 

 2-lipped ; upper lip linear, erect ; lower lip spreading, 3-lobed. Sta- 

 mens 2, elongated. Anthers linear, y. 



1. M. DIDYMA (Bee JJalm). Stem erect, usually branching ; leaves 

 ovate, or ovate-lanceolate, rounded or somewhat cordate at base, rough, on 

 short petioles ; bracts and uppermost leaves tinged with red ; flowers in 

 dense, terminal heads ; calyx smooth, colored ; corolla large and showy, 

 smooth, very long, bright red or scarlet. July. 



2. M. FISTULOSA ( Wild Bergamot}. Nearly smooth ; stem erect; leaves 

 petiolate, ovate-lanceolate, rounded ; flowers in a few, dense, terminal, many- 

 flowered heads, surrounded by sessile bracts, the upper and outer of which 

 are leafy and often colored ; calyx very hairy at the throat ; corolla pale 

 purple, greenish white or rose-colored, smooth or hairy. In woods, 2-4 feet 

 high. July-September. 



5. Salvia. Calyx campanulate, striate, bilabiate ; upper lip 2-3- 

 cleft ; lower lip 2-cleft. Corolla deeply 2-lipped ; upper lip straight ; 

 lower lip spreading, 3-lobed. Stamens 2, with short filaments. 2f 



S. OFFICINALIS (Sage}. Stem low, shrubby ; leaves ovate-lanceolate, of 

 a dull, grayish green ; flowers in few-flowered whorls, arranged in spikes ; 

 calyx-teeth mucronate, viscid ; corolla blue, with an elongated tube ; upper 

 lip as long as the lower, and somewhat vaulted. July. 



