ceous points; the whole plant is glabrous or pubescent; the 
flowers vary greatly in size, and the calyx is straight or 
curved. 
Descr. An erect or ascending branched herb, with peren- 
nial rootstock, glabrous, hirsute, or puberulous. Stem acutely 
four-angled. Leaves one to four inches long, broadly 
ovate-cordate, rarely rounded at the base, deeply serrated or 
toothed, bright green above, paler beneath ; petiole one-half 
to two inches long. Spikes terminal, sessile or peduncled, 
two to four inches long, one-half to one inch in diameter, 
lax- or dense-flowered. Bracés elliptic-lanceolate, acuminate, 
ending in a straight subulate point, reticulate, rigid. Calyx- 
tube shortly cylindric, straight or curved, strongly nerved ; 
lobes as long as the tube, subulate, with long straight points. 
Corolla purple, lower lip nearly white; tube twice or thrice 
as long as the calyx, funnel-shaped, slightly curved; upper | 
lip short, two-lobed ; lower three-lobed ; side lobes very short, 
recurved, longer than broad; mid-lobe orbicular, -concave, 
crenulate. Stamens included in the upper lip. Stigma 
_ ~~ short subulate lobes. Mueules small, smooth.— 
Fig. a, flower; b, the same halved vertically ; ¢, calyx; d, stigma; ¢, nucules: 
—all enlarged. 
