346 LAB1ATJE. (MINT FAMILY.) 



motely toothed ; sterile filaments minute and slender. — Atsion Creek, New Jer- 

 sey, \V. M. Canby. — Nearest the var. parvifolius, Miguel, from Japan : proba- 

 bly L. rubellus, McehcIi, is a closely related form. 



Var. integrifdlius. Stems often producing slender runners ; leaves oblong- 

 lanceolate, varying to narrowly lanceolate (L. angustifolius, Nutt.), much acu- 

 minate at both ends (2' -4' long), slender-petioled, sharply serrate. — Common 

 westward. 



Var. sinuatUS. (L. sinuatus, Benth. L. exaltatus & L. sinuatus, Ell.) 

 Much branched, smooth or smoothish ; runners short or none ; leaves mostly 

 more tapering to both ends than in the European form, varying from cut-toothed 

 to pinnatifid; sterile filaments mostly with a globular or spatulate tip. — Com- 

 mon in wet grounds. 



6. CTJNILA, L. Dittany. 



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: also sterile filaments. — Perennials, with 

 small white or purplish flowers, in corymbed cymes or clusters. (An ancient 

 Latin name, of unknown origin.) 



1. C. Mariana, L. (Common Dittany.) Stems tufted, corymbosely 

 much branched (1° high) ; leaves smooth, ovate, serrate, rounded or heart-shaped 

 at the base, nearly sessile, dotted (1' long) ; cymes peduncled; calyx striate. — 

 Dry hills, S. New York to Ohio, Illinois, and southward. July -Sept. 



7. HYSSOPTJS, L. Hyssop. 



Calyx tubular, 15-nerved, equally 5-toothed, naked in the throat. Corolla 

 6hort, 2-lipped ; upper lip erect, flat, obscurely notched ; the lower 3-cleft, with 

 the middle lobe larger and 2-cleft. Stamens 4, exserted, diverging. — A peren- 

 nial 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.) 



1. H. officinalis, L. — Roadsides, &c, sparingly escaped from gardens. 

 (Adv. from Eu.) 



8. PYCNANTHEMUM, 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 pun- 

 gent 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 EI. summer and early autumn. — Varies, like the 

 Mints, with the stamens exserted or included in different flowers. (Name com- 

 posed of ttvkvqs, dense, and avOepov, a blossom, from the dense inflorescence.) 



