276 
S VNG'ENESIA iEQUALlS. 
Mich. 2. p. 93. Pursh, 2. p. 508. 
On the somewhat questionable authority of Pursk, (l mean ’ questionable 
as regards the habitat of his species,) I have introduced this plant, which he 
mentions as having been collected in Carolina by Mr. Fraser. Michaux 
discovered it in the prairies of the Illinois. The plant which under this 
name I shall describe, I received from my friend Dr. Torrey, of New-York. 
It was collected near the shores of Lake Michigan, and although by a many 
flowered involucrum, and the want of pubescence, it varies from the des- 
cription of Michaux, it yet resembles his plant in too many respects to be 
hastily separated from it. 
Root tuberous. Stem one to two feet high, slender, glabrous. Leaves 
linear and linear lanceolate, long, narrow, glabrous ; the upper leaves pubes- 
cent along the margin, the lower ones attenuated very much at base. 
Flowers few, (five to eight) in a terminal spike. Involucrum long, cylin- 
drical, containing fourteen to twenty florets. Scales oblong, rounded at 
the summit, and abruptly acuminate, pubescent along the margin. Corolla 
bright purple, sprinkled with glandular dots. Pappus conspicuously 
feathered. 
Grows in woods and meadows— -Pursh. 
Flowers, August— September. 
6. Aspera. 
L. caule subramoso, 
scabro-pubescente; fo- 
liis lineari-lanceoiatis, 
asperrimis ; capitulis 
brevibus, spicatis, dis- 
tincte alternis, solitari- 
is, sessilibus; involucri 
squamis rotundato ob- 
tusis, conniventibus. 
Stem somewhat 
branching, scabrous, 
pubescent; leaves line- 
ar lanceolate, very 
rough; heads short, 
spiked, distinctly alter- 
nate, solitary, sessile ; 
scales of the involu- 
crum obtuse, nearly 
round, connivent. 
Mich. p. 92. Pursh, 2. p. 508. 
This species, which was discovered by Michaux in the prairies of Illinois, 
is mentioned by Pursh as growing also in Carolina. I have not seen it in 
this country, and the Anon. Ramos, of Walter, which Pursh has quoted as 
a synonyme, and which perhaps formed his authority for placing it among 
our plants, belongs, I think, to a very different species, 
Flowers,, August— October. Pursh. 
