284 VERBENACEJR. 



1. T. dickoloma Linn.: stem pubescent; leaves lance-oblong or rhom- 

 boid-lanceolate, petiolate, entire. 



Dry hills. N. Y. to Flor. W. to Miss. June Aug. .Stem 612 inches 

 high, much branched, obtusely 4-angled. Flowers blue, in dichotomous pani- 

 cles. Stamens very long, slender, and curved. 



Forked Trichostema. Blue Curls. 



2. T. linearis Walt. : stem viscidly pubescent ; leaves linear, smooth, 

 sessile, acute at each end ; teeth of the calyx awned. T. dichotoma var. 

 linearis Pursh. 



Sandy fields. N. J. to Car. June Sept. . Resembles the former in 

 habit, but is smaller. It is- considered distinct by Nuttall and Elliott. 



Narrow-leaved Trichostema 



28. TEUCRIUM. Linn. Germander. 



(From. Teucer, a prince of Troy, who is said to have first used this plant 

 medicinally.) 



Calyx tubular or campanulate, almost equally 5 -toothed. 

 Corolla with the tube short ; 4 upper lobes of the limb nearly 

 equal ; the lowest lobe longest, oblong or rounded. Stamens 

 exserted from a cleft between the upper lobes of the corolla. 



T. Canadense Linn. : hoary-pubescent ; leaves ovate-lanceolate, serrate, 

 petiolate, obtuse at base, hoary beneath ; whorls crowded in a single termi- 

 nal spike ; calyx campanulate, with the 3 upper teeth broader. T Virgin- 

 icum Linn. 



Low grounds. Can. to Car. W. to Miss. July, Aug. 1|-. Stem 2 3 feet 

 high, square, usually simple. Leaves varying from ovate to oblong-lanceolate, 

 on short petioles. Flowers purple, in a terminal whorled spike. 



Canadian Germander. Wood Sage. 



ORDER XCIV. VERBENACEaE. VERVAINS. 



Calyx tubular, persistent. Corolla tubular, deciduous, gene- 

 rally with an irregular limb. Stamens usually 4, didynamous, 

 seldom equal, sometimes only 2. Ovary 2 4-celled ; style 1 ; 

 stigma bifid or undivided. Fruit nucamentaceous, sometimes 

 berried, composed of 2 or 4 nucules in a state of adhesion, 

 (rarely with 1 nucule). Seeds with the albumen wanting or 

 fleshy. Trees, shrubs or herbaceous plants, with the leaves op- 

 posite, and the flowers usually in corymbs. 



1. VERBENA. Linn. Vervain. 



(From the Celtic ferfain, derived from far, to drive away, and faen, stone ; 

 from its having been supposed to cure the disease so called. Hook. Brit. Fl.) 



Calyx tubular, with 5 teeth, one of them generally shorter 

 than the rest. Corolla tubular or somewhat funnel-form ; limb 



