LABIAT.E. 'i84 BALLOTA. 



1. S. a'spera. 



Stem erect, the angles retrorsely hispid or rough ; leaves subpetiolate, oblong- 

 lanceolate, acutely serrate, smooth or nearly so ; verticels of the spilce about (J- 

 flowered ; caiyx smoothish, with spreading teeth, at length spinescent. Fields 

 and roadsides. About a foot high and rather slender. Stem erect, square, 

 generally hispid backward on the angles, sometimes nearly smooth. Leaves 

 smooth, membranaceous, generally rounded at base and acute at apex. Spike 

 terminal, leafy, composed of verticels, each with 4 — 8 pale purple flowers. 

 Variable in pubescence. July. Per. Hedge JVtttle. Wound-wort. 



2. S. SYLVA'tICA. mitt. S. hispida. P. 

 Stem very hispid on the angles ; leaves on short petioles, ovate-lanceolate, 



sometimes cordate at base, acuminate, crenate-serrate, hirsute ; verticels 

 2 — G-flowered; floral leaves very small, lanceolate-linear, hispid-ciliate ; calyx 

 hirsute, with ciliate, spinescent teeth. A very rougli and hairy herb, in low 

 woods and on shady banks. Stem erect, 12 — 18 inches high. Leaves 3 — 4 

 inches long and ^ as wide, with rounded or uncinate serratures, the upper 

 surface with short, bristly hairs. Petioles — ^ inch long, and with the veins 

 beneath, hispid. Spike long, slender, terminal, very rough and hairy. Co- 

 rolla exserted, purple, spotted. July, Aug. Per. 



3. S. HYSSOPIFO'LIA. Mx. S. palustris. IVak. 

 Stem scarcely pubescent, slender, erect; leaves sessile, linear-lanceolate, 



slightly dentate ; verticels about 4-flowered ; calyx subspinescent. A slender 

 species 6 — \'2 inches high, in meadows, N. Y. and Ms., rare. Leaves very 

 narrow, often linear, with minute teeth or finely serrulate. Flowers sessile. 

 Corolla a little hairy, purple. July. Per. 



31. MARRU'BIUM. 



Calyx 5 — 10-nerved, 5 — 10-tootlied ; upper lip of the co- 

 rolla entire or birtd, straight, linear, the tube included. 



Name said to be from Marrubium a town in Italy. Cor. bilabiate ; lower 

 lip broader, cleft half way down into 3 seg. of which the middle one is broadest 

 and emarginate, the others acute. Fil. sliorter than cor. concealed under the 

 upper lip. Anth. 2-celled ; cells divaricate. 



M. vulga'rf.. 



Stems ascending, hoary-pubescent ; leaves roundish-ovate, crenate-dentate, 

 downy-canescent beneath; rcz/j/a: of 10 setaceous, uncinate teeth. Introduced 

 into fields and roadsides. Stem 1 — 2 feet high, branching at base, or several 

 from the same root, covered with a white, downy pubescence. Leaves petio- 

 lale, 1 — 2 inches in diameter, vvhitisli and rough-veined above, very woolly 

 beneath, rounded and toothed. Flowers white, in sessile, axillary, dense, 

 hairy verticels. Calyx woolly, the teeth spreading and alternately shorter. 

 The hoarhound is an aromatic and bitter herb, well known as an ingredient in 

 couirh candy. It is a tonic and diuretic, and much used in pulmonary 

 affections. Per. Hoar/iound. 



32. BALLO'TA. 



Calyx hyiiocrateriform, 5toothf;d. 10-striafe; upper lip of 

 the corolla concave, crenate ; seeds ovate, 3-corneied. 



Gr /3aXX4». to reject; on account of its offensive odor. Invol. of linear 

 leaflets under the whnrls. Cor. ringent ; tube cyl. long as cal.; lower lip 

 3-fid, obtuse, the middle seg. largest, emarginate. 



