68 
DESCRIPTION OP MEDICINAL PLANTS. 
what serrate. Calyx ovoid or tubular, gibbous on the lower 
side, near the base, 12-nerved, bearded in the throat, 2- 
lipped, upper lip 3-toothed, the lower 2-cleft. Corolla 2- 
lipped ; upper lip erect, flat, notched at the apex, the lower 
spreading, 2-cleft, scarcely exserted, 2-3" long. Fertile 
stamens 2, the upper pair reduced to sterile filaments. (The 
true pennyroyal is Mentha Pulegium of Europe.) FI. in 
summer. Exceedingly frequent in dry, silicious soils. Col- 
lect in flower for distillation. 
Monarda didyma, L. Oswego Tea. Bee Balm. Herbaceous 
perennial, somewhat hairy, 2° high, acutely 4-angled ; leaves 
petioled, ovate-lanceolate, acuminate, acutely serrate, the 
floral ones and the large outer bracts fringed with red ; ca- 
lyx smooth, incurved, nearly naked in the throat, calyx- 
teeth scarcely longer than the width of the tube; corolla 
smooth, 2' long, bright red, showy. Stamens and style ex- 
serted; heads solitary and terminal. FI. June-July. High 
mountains of East Tennessee, in mountain bogs. The leaves 
and tops are collected in flowering season for the distillation 
of an ethereal oil — Ol. Monardse. 
Monarda fistulosa, L. Wild Bergamot. Smoothish or downy, 
2-5° high ; leaves ovate-lanceolate, the uppermost and outer 
bracts somewhat colored ; calyx distinctly curved, very 
hairy in the throat ; corolla 1' long or more, purple or pur- 
plish dotted, smooth or hairy. The variety M. fistulosa, L.,. 
Var. mollis, Benth., is the prevailing and abundantly pres- 
ent form. Corolla flesh-color or lilac, glandular, its upper 
lip hairy outside or more bearded at the top ; leaves paler, 
soft pubescent beneath ; throat of calyx mostly filled with 
dense beard, with sometimes an outer row of bristles. FI. 
August-September. Collected like former. 
Monarda punctata, L. Horse-Mint. Perennial, minutely 
downy, 2-3° high ; leaves petioled, lanceolate, narrowed at 
the base ; bracts lanceolate, blunt, obtuse at the base, sessile, 
yellowish and purple ; teeth of the dowDy calyx short and 
awnless, rigid, soon spreading; corolla nearly smooth, yel- 
