B. nìgra, L. (Black Horehound.) More or less hairy, but green, erect; the root perennial; leaves ovate, toothed; whorls many-flowered, dense; calyx-teeth 5, longer than the tube of the purplish corolla.—Waste places N. Eng., Penn., etc. (Nat. from Eu.)
31. PHLÒMIS, Tourn. Jerusalem Sage.
Calyx tubular, 5–10-nerved, truncate or equally 5-toothed. Upper lip of the corolla arched; the lower spreading, 3-cleft. Stamens 4, ascending and approximate in pairs under the upper lip; the filaments of the upper pair longer than the others in P. tuberosa, with an awl-shaped appendage at base; anther-cells divergent and confluent.—Leaves rugose. Whorls dense and many-flowered, axillary, remote, bracted. (An old Greek name of a woolly plant.)
P. tuberòsa, L. Tall perennial (3–5° high), nearly smooth; leaves ovate-heart-shaped, crenate, petioled, the floral oblong-lanceolate; bracts awl-shaped, hairy; upper lip of the purple corolla densely bearded with white hairs on the inside.—S. shore of Lake Ontario, N. Y. June, July. (Nat. from Eu.)
32. LEONÙRUS, L. Motherwort.
Calyx top-shaped, 5-nerved, with 5 nearly equal teeth which are awl-shaped, and when old rather spiny-pointed and spreading. Upper lip of the corolla oblong and entire, somewhat arched; the lower spreading, 3-lobed, its middle lobe larger, narrowly oblong-obovate, entire, the lateral ones oblong. Stamens 4, ascending under the upper lip; anthers approximate in pairs, the valves naked. Nutlets truncate and sharply 3-angled.—Upright herbs, with cut-lobed leaves, and close whorls of flowers in their axils; in summer. (Name from λέων, a lion, and οὐρά, tail, i.e. Lion's-tail.)
L. Cardìaca, L. (Common Motherwort.) Tall perennial; leaves long-petioled, the lower rounded, palmately lobed, the floral wedge-shaped at base, 3-cleft, the lobes lanceolate; upper lip of the pale purple corolla bearded.—Waste places, around dwellings. (Nat. from Eu.)
L. Marrubiástrum, L. Tall biennial, with elongated branches; stem-leaves oblong-ovate, coarsely toothed; corolla (whitish) shorter than the calyx-teeth, the tube naked within; lower lip rather erect.—Roadsides, N. J. to Del., and southward. (Adv. from Eu.)
L. Sibíricus, L. Tall biennial; leaves 3-parted, the divisions 2–5-cleft, or deeply 3–7-cleft and incised; corolla (purplish) twice as long as the calyx, the upper lip fornicate, the lower little spreading.—Waste grounds, Penn.; also far west. (Adv. from Eu. and Asia.)
33. LÀMIUM, L. Dead-nettle.