544 Okdbb 89.— labiate. 



pubescent, palo red. Stamens and style much exserted, of the same hue as ths 

 corolla. The herb is deUghtfollj fragrant, and used in febrifugal infusions. 

 JL, Aug. 



10. HEDEO^MA, Pers. American Pbunyroyal. (Gr. r]6vg, sweet, 

 (X7/i^, smell.) Calyx 13-striate, gibbous at base, bilabiate, throat hairy, 

 upper lip 3-toothed, lower 2-cleft ; corolla bilabiate, upper lip erect, flat, 

 emarginate, lower spreading, 3-lobed ; stamens 2 fertile, ascending. — 

 Low, fragrant herbs. 



1 H. pulegioides Pers. I/os. oilong, few-toothed, pdiolaie, narrowed to each end; 

 verticils axillary, 6-fiowered ; cor. equaling the calyx. — (D A small, strong-scented 

 herb, held in high repute ia the domestic materia medica. Stem erect, branching, 

 6' high. Loaves opposite, with 1 — 2 teeth each side, on very short petioles, 

 smooth on the upper surface, roughish beneath. Calyx ciliate, 2 lower divisions 

 spined. Abundant in dry pastures, Can. and U. S. Flowering all summer. 



2 H. hispida Ph. lyos. linear, entire, sessile, obtuse ; verticils about C-flowered ; 

 cor. scarcely as long as the calyx. — j) Borders of the Mississippi and Missouri, to 

 Ark.' Herb a few inche.s high, branching, very leafy and somewhat hairy. Lva. 

 6" long. Cal. teeth awned. Jl. 



3 ? H. braotiolata Nutt. Pubescent, simple, slender ; Ivs. linear lanceolate, 

 acute at each end, entire ; pedicels setaceously bracteolate, 3 to 5-flowered ; cal. 

 oblong, equal ; cor. minute ? — Car. (Nuttall). (Mioromeria ? Benth.) 



li. COLLINSO'WIA, L. Horse Balm. (To John Collinson, an 

 English botanist.) Caly.x ovoid, 10-striate, upper lip truncate, 3- 

 toothed, lower 2-cleft ; corolla exserted, campanulate-ringcnt, upper lip 

 in 4 subeqaal lobes, lower lip longer, declined, fimbriate ; stamens 2 

 (rarely 4), much exserted, divergent. — if Herbs strong scented, with 

 large, ovate, serrate, petiolate Ivs. and yellowish fis., in a terminal, leaf, 

 less panicle or raceme. 



• Stamens 2 perfect — the upper pair of filaments minnto points Nos. 1, 2 



— the upper pair of filaments capitate. Boiitliern No. 9 



* Stamens 'i perfect, long exserted. Leaves very large. Southern Nos. 4, 5 



1 C. Canadensis L. Glabrous or sparsely pubescent ; Ivs. acuminate, coarsely 

 serrate, abrupt or subeordate at base ; panicle loose, elongated ; cal. teeth sub- 

 ulate, not longer than its tube ; stam. 2, exserted. — A coarse herb, in woods and 

 fields, Can. to Ky. and Car. St. 4-sided, 3 to 4f high (smooth or a little pubes- 

 cent). Lvs. thin, 6 to 8' long and 3 to 4' wide. Pis. in a large compound ra- 

 ceme, with opposite branches and pedicels. Cor. 5 to 6" long, greenish-yellow, 

 the lower' Mp elongated and fringed. Style and stamens very long. Flowering 

 in summer. 



0. tuber6sa. Lvs. somewhat rhombic-oval, acute at both ends ; fls. smaller, 

 —Car to La. (Hale). (C. tuberosa Mx.) 



2 C. scabriiiscula Ait. Nearly glabrous; lvs. smaU (18" to 3' long), acute, 

 rather abrupt at base, scabrous on the upper surface ; panicle very loose, leafy at 

 ba.se ; fls. small; caL teeth subulate, scarcely longer than its tube ; stam. 2, 

 sterile fil. minute. — S. Car to Pla., near Savannah. Plant 2 to 6f high. Petioles 

 half as long as the leaves. Fls. opposite. Cor. thrice as long (4 to 5') as caly.x. 

 Sept. — Nov. 



3 C. punctata EU. Pubescent, lvs. large (5 to 1' long), acuminate, rather acute 

 at base, conspicuously resinous-punctate beneath ; rac. paniculate, the lower axil- 

 lary; fls. small; cal. teeth subulate-awned, longer than its tube; stam. 2, exserted, 

 sterile fil. capitate. — Rich soils, S. 'Car. and Ga. (Feay). Plant 2 to 6f high. 

 Petioles - a third as long as the leaves. Cor. twice longer (4 to 5") than calyx 

 teeth. Sept., Oct. 



4 C. verticillata B.<>ldw. Tiscid-pubescent above ; lvs. broad-oval, acute or 

 acuminate, abrvpt at base, coarsely dentate, falsely verticHlaie by the proximity of 

 pairs J rac. simple, elongated, with the fls. verticiUatc ; cal. teeth setaceous-pointed ; 



