Hedeoma pulegioides. 167 
uated at the base, into slender petioles, sparsely dentated, promi- 
nently veined, particularly beneath, and pubescent. Flowers very 
small, pale-blue, verticillate on short peduncles. Calix striated and 
pubescent, having the upper lip divided into two setous, ciliated seg- 
ments ; the lower lip into three larger, and destitute of ciliation. 
The flowers appear in July, and the plant continues to bloom till 
the last of autumn. It is distributed extensively over every part of 
the United States, growing always on dry, and seems to prefer arid 
and calcareous soils. It is very abundant by road sides, and is fre- 
quently seen growing in the crevices and ruts of turnpikes. 
The whole plant gives out when pressed between the fingers or 
agitated, a strong, pungent and grateful scent, which is extremely 
reviving and pleasant. Great quantities of the herb are brought to 
the Philadelphia Market, and vended at a trifling price, for medical 
purposes; and the ready sale it meets with, proves how extensively 
it is used in domestic practice. 
MEDICINAL PROPERTIES. 
Pennyroyal is introduced into this work, an account of the high 
degree of popular confidence it enjoys,as an emenagogue. Whether 
the herb is entitled to all the reputation it possesses, in pro- 
ducing a return of the suppressed catamenia, I cannot undertake to 
