Sebasincseb aeRO si He EI 
Botany of Illinois and Missouri. — 263 
subacuminate, ciliate, scabrous on both sides.. Flower 
solitary, terminal, ore ga peduncle, which 3 is of about half 
an inch in length. Calyx inferior? segments large, ovate, 
Sy bacon oat persistent, as long as the tube of the 
orol olla blac; border expanding. 
Has. Fields about half a mile west of St. Louie Ma reh, 
Oss. When I first observed this plant, I supposed it to be 
H. patens of Elliott ; but upon a closer examination, I find it 
to be quite distinct. The stem of H. minima is simple: in a 
few specimens, however, | Baevve a small shoot protruded 
from near the.root ; the leaves and the segments of the Cal 
are of a different shade, the latter being much large 
peduncle of H. patens is armed in the middle with two scales, 
which is not the case with A minima, Mr. Elliott obserngy 
y to minema 
whole fields covered with this beautiful little plant, and it is 
uniform in its height, and the other specific characters above 
detailed. The segments of the calyx alone, would sufficient- 
ly distinguish it from H. cerulea Lin. ; and indeed from all 
the other species of this genus. 
Houstonia cerulea Lin. 
Hag. Prairies in Illinois and Missouri~common. May. 
Ms npociinany. age mostly dichotomous stems. 
ustonia longifolia Willd. 
Hin. rnd west of St. Nous —May. 
Houstonia purpurea Willd, — 
Has. In similar situations with the last. May. My spe- 
cimens all have lanceolate leaves,’ differing, however, in 
breadth. Hence the reason why Linneus and some of his 
correspondents confounded it with H. longifolia 
Houstonia ciliolata Torrey Fl. 
Has. Woods three miles west of St. Louis. May. 
Oxs. My Missouri specimens of this plant agree remark- 
ably with those which I received from Professor Hadley, of 
the Western ‘Medical College, and which he gathered at 
Niagara Falls. Previous to my having seen Dr. Torre 
description, I had labelled my specimens H, purpurea wth 
