350 LABIAT.E. (mint FAMILY.) 



13. MELISSA, L. Balm. 



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

 with a recurvod-aseendin^' tiil)C. Stamens 4, curved and connivin;; under the 

 upper lip. Otherwise nearly as Calanuntha. — Clusters Jew-flowered, loose, 

 one-sided, with few and mostly ovate bracts rescniblin<^ the leaves. (Xame from 

 firj\i(Taa, a bee ; the flowers yielding abundance of honey.) 



1. M. officinXlis, L. (Common Balm.) Uprijiht, branehinjr ; leaves 

 broadly ovate, crenate-toothed, lemon-scented ; corolla nearly white. — Sparingly 

 escaped from gardens. (Xat. from Eu.) 



14. HEDEOMA, Pers. Mock Pexnyroyal. 



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

 bearded in the throat, 2-lippcd ; the upper lip 3-tootlied, the lower 2-cleft. Co- 

 rolla 2-lij)ped ; the upper lip erect, flat, notched at the apex ; the lower spread- 

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

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

 of Howers (in summer), often forming terminal leafy racemes. (Altered from 

 'll8vu(Tfj.oi>, an ancient name of Mint, from its sweet scent.) 



1. H. pulegioides, Pers. (American Pennyroyal.) Erect, branch- 

 ing, hairy; leaces petioled, oblong-ovate, ol'scureli/ seiraie, the floral similar; whorls 

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

 filaments tipped with a little head. — Open barren woods and fields. — The taste 

 and odor nearly of the true Pennijroija/ (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 /lispid cahjx. — Dry hills, W. Illinois and westward. 



15. COLLINSONIA, L. IIorse-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-lippcd ; the 4 upj)er lobes nearly equal, but the lower much larger and 

 longer, pendent, toothed or laeerate-fringt d. Stamens 2 (sometimes 4, the up- 

 per pair shorter), much exserted, diverging: anther-cells divergent. — Strong- 

 scented perennials, with large ovate leaves, and yellowish flowers on slender pedi- 

 cels, in loose and ])anicled terminal racemes. (Named in honor of Pdtr ColUn- 

 son, a well-known patron of science and correspondent of Linnaeus, who intro- 

 duced it into England.) 



1. C. Canadensis, L. (Rich-weed. Stone-root.) Nearly smooth 

 (l°-3° high); leaves serrate, pointed, petioled (3' -6' long); panicle loose; 

 stamens 2. — Rich moist woods : common. July - Sept. — Corolla 8" - 9" long, 

 lemon-sceutcd. 



16. SALVIA, L. S.^GE. 



Calyx naked in the throat, 2-lipped ; the upper lip 3-toothcd or entire, the 

 lower 2-cleft. Corolla deeply 2-li])ped, ringcnt ; the upper lip straight or scythe- 

 shaped, entire or bai-ely notched ; the lower spreading or pendent, 3-lobcd. the 



