β. debilis. Weak, much branched, from a decumbent base.-Ga., La,
3 S. palustris L. St. stout, erect, hispid, with retrorse bristles; lvs. many, hispid, hoary beneath, on short petioles, oblong-lanceolate, subacuminate, narrowed towards the obtuse base, crenaie-serrate; cal. hispid, teeth acuminate-spinulous, erect-spreading ; cor. twice longer than the calyx.- By streams and in moist shades, Can. and Wis. to Car. Herb rough and coarse, 1 to 4f high. Lvs. 3 to 6' long, petioles a few lines. Bracts longer than the calyx. Fls. widely gaping, 7 to 8 ' long, pale red spotted with purple. Jn.-Aug. (S. hispida Ph.)
4 S. aspera Mx. St. slender, erect or flexuous, retrorsely hispid; lvs. sparsely hispid, subsessile, ovate-lanceolate, acute or acuminate, sharply serrate, obtuse at base; cal. glabrous, but ciliate on the angles, and the lanceolate, spinulous, sub-erect teeth.- Can. and U. S., in damp places, common. Plant much mora slender and smooth in aspect than the preceding, yet technically scarcely different It is green rather than hoary, about 2f high, simple. Lvs. 2 to 3' by 6 to 9". Cal. smoothish, the teeth usually purple, equaling the tube of the purple spotted corolla. Jl., Aug,
5 S. Nuttalliana Shuttlew. St. stout, erect, often branched, hispid with bristly, spreading hairs; lvs. elliptical-ovate, acuminate, crenate-serrate, sparsely hispid, narrowed to a cordate base, petiolate ; cal. pubescent, teeth triangular, very acute, shorter than the tube of the corolla or calyx.- Ohio to Tenn., along shaded banks. Plant light green, 3 to 5f high, with largo leaves. St. with grooved sides and hispid angles. Lvs. 4 to 9' by 18" to 40". Verticils remote. Cor. light red, with purple stripes and dots, the tube much exserted. Jl, Aug. (S. sylvatica Nutt.)
6 S. arvensis L. Annual; st decumbent, hairy; lvs ovate, cordate, petiolate, obtuse, crenate, the highest shorter than the lanceolate, acute teeth of the hispid calyx; cor, tube included, lips short.-In waste grounds near Boston, Ac Plant slender, 3 to If long, with long, spreading hairs. Lvs. 1' or less. Cor. pubescent. § Eur.
39. LEONITRUS, L, Mother-wort. (Gr, a lion, tail; from the appearance of the spikes of flowers.) Calyx 5 to 10-striate, 5-toothed, teeth suhspinescent; upper lip of the corolla entire, hairy, concave, erect, lower lip 3-lobed, the middle lobe obcordate; stamens 4, ascending beneath the upper lip. Mostly
1 L. Cardiaca L. Lvs. palmate-lobed, uppermost lanceolate, often trifid, all of them toothed, cuneiform at base; cor. longer than the calyx, the tube with a hairy ring within.-Tartary, whence it was first introduced into Europe and thence to America, ever following the footsteps of civilized man. Common in waste places. Stem 3-5f high, downy, square, large, purplish, bearing its opposite, stalked, rough leaves arranged in 4 vertical rows. Fls. in many whorls. Calyx rigid and bristly. Cor. purplish, hairy without, variegated within. July.-It has reputation as an ingredient in herb drinks for colds, coughs, etc. §
2 L. marrubiastrum L. Lvs. oblong-ovate, incisely and coarsely serrate, the floral lanceolate, tapering at each end, incisely dentate; cor. shorter than the calyx teeth, tube naked within, upper lip somewhat vaulted, pubescent.-Penn., Ind., rare A plant of vigorous growth, 2-4f high, with opposite, ascending branches. Leaves 2-3' in length, the lowest on long petioles. Verticils many-flowered, remote but numerous, forming an interrupted, leafy spike. Corolla reddish white. July, Aug. § Eur.
40. MARRU'BIUM, L. Hoarhound. Calyx tubular, 5-10 striate, with 5 or 10 subequal teeth; cor. bilabiate, upper lip erect, flattish or concave, entire or bifid, lower lip spreading, 3-lobed, middle lobe broadest, emarginate, tube included ; sta. included in the tube.- .
M. vulgare L. St. ascending, hoary pubescent; lvs. roundish, ovate, crenate-dentate, downy canescent beneath; cal. of 10 setaceous, uncinate teeth.-Fields and roadsides. St. 1 to 2f high, branching at base, or several from the same root. Lvs. petiolate, 1 to 2' diam., whitish and rough veined above, very woolly bo-neath, rounded and toothed. Fls. white, in sessile, axillary, dense, hairy verticils. Cal. woolly, the teeth spreading and alternately shorter. Jl., Aug. § Eur. "Well known as an ingredient in cough candy.
41. LEU'CAS, L. (Gr. white; the usual color of the densely woolly flowers.) Calyx tubular, 8 to 10-toothed, subequal; corolla tube included, upper lip concave, erect, entire, very hairy without, the lower longer, spreading, trifld, middle lobe the largest; stamens beneath the galea; filaments not appendaged, achenia 3-augled.-Fls. in axiilary verticils.
L. Martimcensis Br. Erect, pubescent; lvs. petiolate, ovate, crenate, rugous, the floral lanceolate; verticils distant, large, globular, many-flowered; cal. incurved, oblique, upper tooth longest- Herbs 1 to 2f high, with small white flowers. Escaped from gardens, Ga. § W. Ind.
42. LEONO'TIS, Br. Lion's -ears. (Gr. a lion, ears; a fanciful name alluding to the corollas.) Calyx 10-veined, apex incurved, throat oblique, sub-10-toothed, upper tooth largest; corolla tube exserted, limb bilabiate, upper lip concave, erect, entire, lower short, spreading, trifid ; stamens 4, ascending under the galea ; anthers in pairs.-Verticils dense, with numerous, linear-subulate bracts. Fls. scarlet-yellow.
L. nepetaefolia Br. Herb stout, erect; lvs. thin, ovate, crenate; cal. teeth 8, the upper much the largest, all spinescent; cor. scarlet, about twice longer than the calyx.- _ Waste and cultivated grounds, S. Car, and Ga, common. Plant
large and very showy, 4 to 7f high. St. deeply 2-grooved on the 4 sides, angles rounded. Lvs. comparatively small, 18" to 30" by 12 to 20", on long petioles. Clusters terminal and subterminal, near 2' diam., beset with the calyx spines and the brilliant, downy corollas 10" in length. § Africa.