from the leaves, and two placed opposite to each other at 
each subdivision of the peduncle. Calyx five-parted, seg- - 
ments, ovate, acute, spreading, the upper the broadest and 
shortest. Corolla rather pale lilac above, and, at the apices — 
of its lobes, yellow, with purple veins below ; upper lip of 
two, lower lip of three segments, upper surface of lower lip 
with long yellowish hairs. Stamens included ; filaments 
ascending ; anthers cordate, lobes spreading, purple on the 
outside, whitish within ; barren filament dilated at its base, 
and adhering to the upper side of the corolla, above which 
it dips to the lower side of the corolla, along which it is 
laid, densely covered with yellow hairs on its upper side for 
more than half its length. Piséil rather shorter than the 
barren filament ; germen conical; style straight ; stigma 
small, entire. : 
The seeds of this species, which flowered at the Botanic 
Garden of Edinburgh, during the greatest part of the sum- 
mer, were received from Mr. Drummonp, on bis return from 
the second expedition under Capt. Franxuin to British | 
North America. Granam. 
This species is unquestionably the P. gracilis of Mr. 
Nurrazt, who gave this name to specimens in my herba- 
rium, from the Mandan territory, which were communicated 
a. Mr. Brapsoury ; this being the same district in which 
r. Nurrazt had gathered the individual plants that he 
has described in the work above quoted. Mr. Doveras 
found it common upon the Red River, about Brandon 
House, in the plains near that settlement, and Dr. RicuarD- 
son near Carlton House. It has flowered in the Glasgow 
Botanic Garden, which yielded the specimen here figured. 
— 
Fig. 1. Root Leaf. 2. Lower Stem-Leaf, nat. size. 3, Pistil. 4. Sta- 
men.—Magnified. 
