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DESCRIPTION OF MEDICINAL PLANTS. 
lycopus Virginicus, L. Bugle-weed. Mint-like perennial, 
growing at the edge of the water, glabrous or somewhat pu- 
bescent ; stem obtusely angled 6-24' high, stoloniferous ; 
long filiform runners produced in summer from the base of 
the stem, often tuberiferous at their apex. Leaves ovate or 
oblong-lanceolate, coarsely serrate in the middle, acuminate at 
both ends, tapering into a short petiole. Calyx campanulate, 
naked in the throat, teeth 4, sometimes 5, ovate or lanceolate- 
ovate ; upper lobe of corolla entire. Nutlets 3-sided, truncate 
at top, narrow at base, thickened-margined. The herb is 
bitter, only slightly aromatic. FI. June-July. The herb is 
collected. 
Cunila Mariana, L. Dittany. Delicate low perennial 8-12' 
high, fragrant. Stems tufted, corymbosely much branched; 
leaves smooth, ovate, serrate, rounded or heart-shaped at base, 
nearly sessile, dotted, 1' long ; cymes peduncled. Calyx 
ovate, tubular, equally 5-toothed, very hairy in the throat, 
striate. Corolla 2-lipped ; upper lip erect, flattisb, mostly 
notched ; the lower 3-cleft. Stamens 2, erect exserted, dis- 
tinct; sterile filaments short, minute. Flowers white or 
purplish. In sandy, siliceous soils or magnesian limestone, 
not in limestone regions. Abundant, especially in East Ten- 
nessee. July-September. The herb. 
Pycnanthemum linifolium, Pursh. Mountain Mint. Virginia 
Thyme. Perennial upright herb, with a pungent, mint-like 
flavor, corymbosely branched above; the many-flowered 
whorls dense, crowded with bracts forming terminal heads or 
close cymes. Leaves linear, smoothish, nearly sessile, entire, 
very numerous. Capitate glomerules small and numerous. 
Calyx ovate-oblong, about 1-nerved, equally 5-toothed, naked 
in the throat. The narrow bracts and lance-awl-shaped calyx- 
teeth pungently pointed. 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. Corolla whitish, the lips dotted with purple. Up- 
