LABIATE. (mint FAMILY.) 409 



9. CUNILA, L. Dittany. 



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

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

 Stamens 2, erect, exserted, distant ; sterile filaments short, minute. — Peren 

 nials, 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, corymboselji 

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

 shaped at base, nearly sessile, dotted (1' long) ; cymes peduucled; calyx stri 

 ate. — Dry hills, southern N. Y. to S. Ind., south to Ga. and Ark. 



10. HYSSOPUS, Tourn. Hyssop. 



Calyx tubular, 15-nerved, equally 5-toothed, naked in the tliroat. 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. — 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.) 



H. OFFICINALIS, L. — Roadsides, etc., sparingly escaped from gardens. 

 (Adv. from Eu.) 



11. PYCNANTHEMUM, Michx. Mountain Mint. Basil. 



Calyx ovate-oblong or tubular, about 13-nerved, equally 5-toothed, or the 

 three ujjper 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 (n- included in different flowers. 

 (Name composed of itvkv6s, dense, and 6.vQe^ov, a blossom, from the dense 

 inflorescence.) 



* Bracts and equal cali/x-teeth aivn-tipped, rigid, naked, as long as the corolla ; 

 floicers in rather dense mostly terminal heads ; leaves rigid, slightly petioled. 



1. P. aristatum, Michx. Minutely hoary-puberulent (1-2° high); 

 leaves ovate-oblong and oblong-lanceolate, acute, sparingly denticulate-serrate 

 (1 -2' long), roundish at the base. — Pine barrens, N. J. to Pla. and La. 



A"ar. hyssopifolium, Gray. Leaves narrowly oblong or broadly linear, 

 aearly entire and obtuse. — Va. to Fla. 



* * Bracts and equal and similar calyx-teeth not awned. 



— Leaves linear or lanceolate, nearly sessile, entire, very numerous ; capitate 

 glomerules small and numerous, densely cymose, imbricated with many short 

 oppressed rigid bracts. 



2. P. lanceolatum, Pursh. Smoothish or minutely pubescent (2° high) ; 

 leaves lanceolate or lance-linear, obtuse at base ; heads downy ; bracts ovate or 

 lanceolate ; calyx-teeth short and triangular. — Dry thickets, Mass. to the 

 Dakotas, south to Ga. and Ark. 



