[*][*] Not stoloniferous; leaves incised or pinnatifid.
5. L. sinuàtus, Ell. Stem erect, 1–3° high, acutely 4-angled; leaves oblong or lanceolate (1½–2´ long), acuminate, irregularly incised or laciniate-pinnatifid, or some of the upper merely sinuate, tapering to a slender petiole; calyx-teeth short-cuspidate; sterile filaments slender, conspicuous, with globular or spatulate tips. (L. Europæus, var. sinuatus, Gray.)—Common.
Calyx ovate-tubular, equally 5-toothed, very hairy in the throat. Corolla 2-lipped; upper lip erect, flattish, mostly notched; the lower spreading, 3-cleft. Stamens 2, erect, exserted, distant; sterile filaments short, minute.—Perennials, with small white or purplish flowers, in corymbed cymes or clusters. (An ancient Latin name, of unknown origin.)
1. C. Mariàna, L. (Common Dittany.) Stems tufted, corymbosely much branched (1° high); leaves smooth, ovate, serrate, rounded or heart-shaped at base, nearly sessile, dotted (1´ long); cymes peduncled; calyx striate.—Dry hills, southern N. Y. to S. Ind., south to Ga. and Ark.
10. HYSSÒPUS, Tourn. Hyssop.
Calyx tubular, 15-nerved, equally 5-toothed, naked in the throat. Corolla short, 2-lipped; upper lip erect, flat, obscurely notched, the lower 3-cleft, with the middle lobe larger and 2-cleft. Stamens 4, exserted, diverging.—Perennial herb, with wand-like simple branches, lanceolate or linear entire leaves, and blue-purple flowers in small clusters, crowded in a spike. (The ancient name.)
H. officinàlis, L.—Roadsides, etc., sparingly escaped from gardens. (Adv. from Eu.)
11. PYCNÁNTHEMUM, Michx. Mountain Mint. Basil.
Calyx ovate-oblong or tubular, about 13-nerved, equally 5-toothed, or the three upper teeth more or less united, naked in the throat. Corolla short, more or less 2-lipped; the upper lip straight, nearly flat, entire or slightly notched; the lower 3-cleft, its lobes all ovate and obtuse. Stamens 4, distant, the lower pair rather longer; anther-cells parallel.—Perennial upright herbs, with a pungent mint-like flavor, corymbosely branched above, the floral leaves often whitened; the many-flowered whorls dense, crowded with bracts, and usually forming terminal heads or close cymes. Corolla whitish or purplish, the lips mostly dotted with purple. Fl. summer and early autumn.—Varies, like the Mints, with the stamens exserted or included in different flowers. (Name composed of πυκνός, dense, and ἄνθεμον, a blossom, from the dense inflorescence.)