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DESCRIPTION OF MEDICINAL PLANTS. 
limestone regions of Middle Tennessee. FI. May-August. 
Has locally gained some reputation used in infusion as a 
remedy in chronic dysentery. 
Verbena hastata, L. Blue Vervain. Tall, 4-6° high, leaves 
lanceolate or oblong-lanceolate, taper-pointed, cut-serrate, 
petioled, the lower often lobed and sometimes halbert-shaped 
at base ; spikes linear, densely flowered, erect, corymbed or 
panicled. Fruits crowded, sometimes overlapping each 
other. Flowers blue. FI. July. The herb and root. Very 
common in sandy soils. 
Verbena stricta, Vert. Hoary Vervain. Downy, with soft, 
whitish hairs; erect, simple or branched, 1-2° high; leaves 
sessile, obovate or oblong, serrate; spikes thick, somewhat 
clustered, hairy. Flowers rather large, purple. FI. July. 
Counties along Mississippi river, in sandy soils. Abundant. 
The whole plant. 
LABIATiE. (Mint Family.) 
Teucrium Canadense, L. American Germander. A downy, 
grayish-green, herbaceous perennial. Erect, 1-3° high ; 
leaves ovate-lanceolate, serrate, rounded at base, short-pet- 
ioled, hoary underneath, the floral scarcely longer than the 
oblique unequally-toothed calyx; whorls about 6-flowered, 
crowded in a long and simple wand-like spike. Calyx ca- 
nescent, 5-toothed, the 3 upper lobes very obscure, or the 
middle one acutish. Corolla with the 4 upper lobes nearly 
equal, oblong, turned forward, so that there seems to be no 
upper lip ; the lower lobe much larger. Stamens 4-exserted. 
FI. June-September. In low, damp ground, along water- 
courses. Common. The herb; collect in flowering season. 
©ollinsonia Canadensis, L. Horse-Balm. Stone-root. Stout 
herbaceous perennial, nearly smooth, 1-2° high, with ser- 
rate, pointed and petioled leaves, with loose pannicles of 
yellowish flowers. Calyx ovate, enlarged and declined in 
fruit, 2-lipped ; upper lip truncate and flattened, 3-toothed, 
the lower 2-cleft. Corolla elongated, expanded in the throat. 
