436 — DESCRIPTIONS OF NEW SPECIES 
fe sams with En somewhat elevated ribs. Pappus pilose, white and slender, 
int two or three series, slightly barbellate, about the length of the achenium. 
—Perennials, with the habit of Hzeracium, as well as that of Crepis. Leaves 
runcinately toothed, scapoid stems corymbose, branching. Flowers yellow. 
—(The name alludes to the affinity with Crepis.) 
CrEPIDIUM *runcinatum; smooth; leaves oblong-lanceolate, runcinately and 
incisely toothed, acute; scape branching, corymbose, few-flowered ; involucrum 
pubescent, the segments acuminate. Crepts diennis, Hooxer, (according toa 
aneotn eh from the author,) not of Linneus. It differs from the present, how 
1a si omewhat hirsute leaves, and less deeply toothed. 
Has. On the grassy plains of the Platte, in subsaline soils. Scape about a foot high, with seven 
to nine capituli, and a linear bracte at the base of each pedicel, as well as at the base of the bifur- 
cation of the stem. Leaves much like those of the Dandelion, but less divided, green, and some- 
what fleshy. Involucel about eight-leaved. 
Crepidium * glaucum; smooth and glaucous; leaves spathulate-lanceolate or 
obovate, runcinately and incisely toothed, acute, attenuated below, but rather 
broad to the base; scape smooth, divaricately branched, with minute bractes : 
capituli small; involucrum smooth, the segments linear and somewhat obtuse. 
Has. With the above, but less common; every where very smooth, the leaves much larger than 
in the preceding, half a foot long, and one to one and a half inches wide, sometimes nearly entire, 
rather thick and succulent. The scape twice forked, or more; about three flowers together at the 
summits of the branches, not half the size of those of the preceding. Scape eighteen inches to two 
feet high, terete and almost entirely naked, all the bractes being minute and mieelate Involucrum 
of about twelve linear leaves; involucel minute, of about eight lanceolate leaflets. Style and 
_ stigmas very long and filiform, slightly pubescent. 
Crepidium ‘*caulescens; very smooth, but sot glaucous; leaves spathulate- 
) ceolate, runcinately i incise toothed and acute; stem scapoid, 
naked, dichotomously branched, with a conspicuous toothed leaf at the base of 
the first division; involucrum smooth, the segments lanceolate-oblong. 
Has. With the above, of which I, at first, took it for a mere variety; but the presence of a true 
stem, though short, and the form of the sepals, distinguish it. 
CREPIS. (Mecench, Decand.) 
§. * Leprorgeca.—Involucrum cylindric, leaflets linear in a single series, (five 
to eight;) involucel of three to five minute bractes; florets five to eight. Ache- 
nium attenuated into a short, indistinct rostrum, similar with itself—Peren-. 
