308 LABIATJE. (MINT FAMILY.) 



tallii, Benth. Micromeria glabella, var. angustifolia, Torr.) Wet limestone 

 rocks, Niagara Falls to Wisconsin, Central Ohio (Sullivant), and southwestward. 

 July- Sept. Appearing very distinct, but united by Southwestern forms, &c. 



i 3. CLINOPODIUM, L. Calyx more or less gibbous Mow: dusters sessile and 



many-flowered, crowded with awl-shaped bracts. 



3. C. CLINOP6DIUM, Benth. (BASIL.) Hairy, erect (1- 2 high) ; leaves 

 ovate, petioled, nearly entire ; flowers (pale purple) in globular clusters ; hairy 

 bracts as long as the calyx. (Clinopodium vulgare, L.) Borders of thickets 

 and fields. July. (Nat, from Eu.) 



13. U1EL.ISSA, L. BALM. 



Calyx with the upper lip flattened and 3-toothed, the lower 2-cleft. Corolla 

 with a recurved-ascending tube. Stamens 4, curved and conniving under the 

 Tipper lip. Otherwise nearly as Calamintha. Clusters few-flowered, loose, 

 one-sided, with few and mostly ovate bracts resembling the leaves. (Name from 

 /leXio-aa, a bee; the flowers yielding abundance of honey.) 



1. WI. OFFICINALIS, L. (COMMON BALM.) Upright, branching; leaves 

 broadly ovate, crenate-toothed, exhaling the odor of lemons ; the corolla white 

 or cream-color. Sparingly escaped from gardens. (Adv. from Eu.) 



14. HEDEOMA, Pers. MOCK PENNYROYAL. 



Calyx ovoid or tubular, gibbous on the lower side near the base, 13-nerved, 

 bearded in the throat, 2-lipped ; the upper lip 3-toothed, the lower 2-cleft. Co- 

 rolla 2-lipped ; the upper lip erect, flat, notched at the apex ; the lower spread- 

 ing, 3-cleft. Fertile stamens 2 ; the upper pair reduced to sterile filaments or 

 wanting. Low, odorous plants, with small leaves, and loose axillary clusters 

 of flowers, often forming terminal leafy racemes. (Altered from 'H^vocr/iov, 

 an ancient name of Mint, from its sweet scent.) 



1. H. pulegioides, Pers. (AMERICAN PENNYROYAL.) Erect, branch- 

 ing, hairy ; leaves petioled, oblong-ovate, obscurely serrate, the floral similar ; whorls 

 few-flowered ; corolla (bluish, pubescent) scarcely exceeding the calyx ; sterile 

 filaments tipped with a little head. (J) Open barren woods and fields ; com- 

 mon. July - Sept. Plant 6'- 10' high, with nearly the taste and odor of the 

 true Pennyroyal (Mentha Pulegium) of Europe. 



2. H. hispida, Pursh. Erect hairy (2' -5' high); leaves sessile, linear, 

 entire, the floral similar and exceeding the flowers ; corolla scarcely longer than 

 the ciliate hispid calyx. Q) Illinois, opposite St. Louis, and southwestward. 



15. COI^L-INSONIA, L. HORSE-BALM. 



Calyx ovate, enlarged and declined in fruit, 2-lipped ; upper lip truncate and 

 flattened, 3-toothed, the lower 2-cleft. Corolla elongated, expanded at the 

 throat, somewhat 2-lipped ; the 4 upper lobes nearly equal, but the lower much 

 larger and longer, pendent, toothed or lacerate-fringed. Stamens 2 (sometimes 

 4, the upper pair shorter), much exserted, diverging : anther-cells divergent. 



