304 labiatjE. (mint family.) 



oiiate, bluntish and pointless. — Shady moist places ; common, especially north- 

 ward. Aug. — Smooth, often pm-plish, with small capitate clusters of very 

 small flowers. 



2. li. Europzeus, L. Stem sharply 4-angled (l°-3° high), with or 

 without runners from the base ; leaves ovate-oblong or oblong-lanceolate, sinu- 

 ate-toothed or pinnatifid, more or loss petioled ; whorls many-flowered ; cali/x- 

 ieeth 5, triangular-lanceolate, tapering to a rigid vertj sharp point ; nutlets (smooth or 

 glandular-roughened at the top) equalling or exceeding the calyx-tube. (Eu.) 

 — Includes several nominal species, among them in our district is 



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. — Common in wet grounds. July, Aug. 



Var. integ'nfolillS. Stems more simple, often producing slender run- 

 ners ; leaves oblong-lanceolate, varying to naiTowly lanceolate (L. angustifolius, 

 Nutt, &c.), much acuminate at both ends (2' -4' long), shai-ply serrate. — 

 Common westward. 



6. C UNI I, A, L. Dittany. 



Calyx ovate-tubular, equally 5-toothed, very hairy in tlie throat. Corolla 2- 

 lipped ; upper lip erect, flattish, mostly notched ; the lower spreading, 3-cleft. 

 Stamens 2, erect, exserted, distant: no sterile filaments. — Perennials, with 

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

 Latin name, of unknown oiigin.) 



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

 much branched (1° high) ; leaves smooth, ovate, serrate, rounded or cordate 

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

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



7. HYSSOPUS, L. Hyssop. 



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

 short, 2-lipped; upper Up erect, flat, obscurely .notched; the lower 3-eleft, with 

 the middle lobe larger and 2-cleft, Stamens i, 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. OFPioiNius, L. — Eoad-sides, Michigan, &c. ; escaped from gardens. 

 (Adv. from Eu.) 



8. PYCNANTHEniUM, Miehx. 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 



