This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Perennial, villous or pubescent; stem erect, rather stout, usually much branched, 1°-3° high, the branches ascending. Leaves lanceolate or ovate-lanceolate, thin, acute or acuminate at the apex, sharply dentate, mostly rounded at the base, usually slender-petioled, 1'-3 1/2' long, 1/2'-1 1/2' wide; spikes dense, becoming 3'-8' long in fruit; bracts lanceolate-subulate or the lower sometimes larger, villous and often glandular; calyx and axis of the spike villous-pubescent and often glandular, the 3 upper calyx-teeth acute or acutish; corolla 4"-6" long.
In moist soil, Maine and Ontario to eastern Pennsylvania, British Columbia, Ohio, Nebraska, New Mexico and California. July-Sept.
Teucrium Scorodonia L. Sp. Pl. 564. 1753.
Perennial, villous-pubescent, 2° high or less, the branches erect-ascending. Leaves mostly ovate, l'-2 1/2' long, obtuse or acute at the apex, cordate or subtruncate at the base, crenate, the petioles 2 1/2"-7" long; racemes narrow, rather loosely flowered, often 5' long, the flowers secund, mostly in pairs, the pedicels shorter than the calyx, equalling or shorter than the ovate, acute or acuminate bracts; calyx veiny, the upper tooth broad; corolla light yellow, 3"- 4" long.
A weed in cultivated fields, Ontario, and reported from Ohio. Ad-ventive from Europe. June-Sept.
Teucrium laciniatum Torr. Ann. Lyc. N. Y. 2: 231. 1828.
Melosmon laciniatum Small, Fl. SE. U. S. 1019. 1903.
Diffusely branched from a woody perennial root, 1° high or less, densely leafy, glabrous, or nearly so. Leaves 1 1/2' long or less, pinnately parted into 3-7 stiff, linear, entire, toothed or lobed segments; flowers solitary in the upper axils, as long as the subtending leaves or shorter, short-peduncled; calyx deeply 5-parted, the lobes narrowly lanceolate, nearly equal; corolla pale blue or lilac, about 9" long, its lower lobes much longer than the calyx.
Plains, Kansas and Colorado to Texas and Arizona. May-Aug.
Teucrium botrys L. Sp. Pl. 562. 1753.
Annual, villous-pubescent, branched, 1° high or less. Leaves slender-petioled, deeply pinnatifid into oblong, entire or toothed lobes, the basal ones with petioles longer than the blades; flowers whorled in the upper axils; pedicels shorter than the calyx; calyx campanu-late, gibbous, about 8" long in fruit, veiny, its teeth triangular-ovate, acute, nearly equal; corolla purplish, about 6" long.
Waste grounds, Massachusetts and Ohio. Naturalized from Europe. July-Sept.