285 TEOCRIUM. 



t 



B. NIGRA. 



Leaves ovate, subcordate, undivided, serrate ; calyx somewhat truncate, 

 throat dilated, teeth spreading, acuminate. Said to have been introduced, 

 but is frequently met with about hedges, &c., in Ms. and Conn. Stem 2 — 3 

 feet high, pubescent as well as the opposite, broad leaves. Flowers purple or 

 white, in a.Killary verticels. This plant has the general appearance of hoar- 

 hound (Marrabium) but not its fragrance. July. Per. Scinking Hoarhound. 



Tribe 9. AJUGOIDEiE. 



Corolla ujrper lip very short, or split to the base, or rarely erect and vaulted, lower lip longer. 

 Stamens ascending, much exserted. Achenia reticulately rugose. 



33. TRICHOSTE'MA. 

 Calyx resupinate; corolla tube slender, limb S-cleft, the 

 lobes oblong, declined ; stamens much exserted, lower ones 

 longer. 



Gr. ^gi|, TQiX'^i, hair, and o-rtj^a, a stamen ; because of its long hair-like 

 stamens. Cal. swelling, oblique ; upper lip (lower by the twisting of the 

 eduncle) of 2, short acute teeth; lower (at length the upper) twice as long, 

 3-toothed. Cor. tube very short; lower hp in 3 seg., middle one very small. 

 Anth. 2-celled, cells divaricate. 



T. dicho'toma. 



Leaves oblong-lanceolate, attenuate at base, obtuse, entire, pubescent ; 

 floioers resupinate ; stamens very loner, e.xserted. Found on dry or rocky 

 hills and in sandy soils. An interesting plant, a foot high. Stem obtusely 

 4-angled. hairy, bushy. Branches opposite, divided, the upper pair generally 

 forming a dichotomous division of the stem. Leaves petiolate, of a rhombic, 

 ovate-lanceolate form. Flowers axillary and terminal, becoming inverted by 

 the twisting of the petlob. Corolla purple. Stamens slender, of a delieate 

 purplish hue, gracefully bending from the lower lip of the corolla to the uppep, 

 forming a beautiful arch. Aucr. Ann. Blue-curls. 



34. TEU'CRIUM. 

 Corolla with the 4 upi)er loi)es nearly equal, the lowest 

 largest, roundish; stamens exserted from the cleft in the up- 

 per side of the lube. 



Teucer, the founder of Troy, is said by Pliny to have first employed this 

 plant medicinally. Cal. subcampanulate and subregular, in 5 acute segments. 

 Cor. ringent, lower lip elongated. 



T. Canade'nse. 



P/an^ erect, hoary-pubescent ; leaves lanceolate, acute, serrate, petiolate; 

 bracts linear-lanceolate, longer than the calyx ; spitce long, of many crowded 

 verticels of flowers; upper teeth of calyz broader. Grows by roadsides, &c. 

 about 2 feet high. Stem simple or branched, square, with concave sides. 

 Leaves 3 times as long as wide, somewhat rounded at base, green above, 

 hoary with down beneath. Bracts longer than the calyx. Flowers disposed 

 in axillary verticels, each of 4 — G. Calyx with 5 broad, nearly equal segments, 

 the 2 lower ones narrower. Corolla purplish, apparently without the upper 

 lip, instead of which is a fissure through which the stamens are exserted. 

 July. Per. Wild Germander. 



ji. Virginicum ; upper leaves ovate-oblong, nearly sessile ; bracts about as 

 long as the calyx. Habits similar to the last. 



