420 : DESCRIPTIONS OF NEW SPECIES 
except the base, the fotm linear-lanceolate, with very long points, all nearly attaining the same 
common height. Pappus plumose, as usual, and clavellate; the florets unequally cleft, and the 
anthers caudate at base.—Nearly allied to C. remotifolium. 
Circium * canescens; 2, dwarf and slender, canescently tomentose; leaves 
lanceolate, decurrent, pinnatifid, undulated segments oblong, bifid, spinescent, 
and with spiny serratures; capituli few, (three to five,) conglomerate, sessile; 
- involucrum slightly pubescent, the scales lanceolate, with rigid, erect spines. 
Has. In the arid deserts of the Platte. The root creeping as in C. arvense. Stem about eight 
to ten inches high, and, as well as the leaves, arachnoidly tomentose and canescent. Leaves three 
or four inches long, about an inch wide, nearly white on both sides, most so beneath, decurrent, 
with narrow spiny margins. Flowers few; the capitulum somewhat hemispherical, the spines 
stout and rather broad. Florets pale rose, unequally cleft. Anthers caudate at base, and lacerate. 
Pappus plumose and slenderly thickened above. 
Circium * edule; annual or biennial, nearly smooth; stem pubescent, angular 
and grooved; leaves lanceolate, amplexicaule, moderately pinnatifid, segments 
obtuse, almost equally two-lobed, spinescent and spinulosely ciliate; capituli 
terminal, conglomerate, sessile, by three and five together ; involucrum subglo- 
bose, arachnoidly ere: the scales a terminating in short, 
erect spines. 
— = — of Oregon and the Blue Modkitsinn common. + Ties to four feet high, robust 
CU a 
purple, nearly the size of those of C. lanceolatum, growing in lateral 
and terminal eluctor in 
qually cleft, anthers caudate, appendage lacerate; cusps of the anthers 
lanceolate, Sisiinite: as in all the preceding, pilose and hirsute. Pappus plumose. Allied to C. 
The young stems, stripped of their bark, are commonly eaten raw by the aborigines, 
and have a somewhat pleasant and sweetish taste. 
Circium *scariosum; 24! dwarf and robust; stem and mid-rib of the leaves 
above and beneath softly and copiously pilose; leaves narrow lanceolate, be- 
neath whitely tomentose, amplexicaule, pinnatifid, sezments lanceolate, termi- 
nated and ciliated with long spines, uppermost leaves and bractes linear, very 
spiny; capituli conglomerate, sessile, roundish; involucrum somewhat arach- 
noidly tomentose, the scales lanceolate and acuminated with rather slender 
spines, inner scales terminating in scariose, lanceolate, fimbriate, reflected 
points. 
Has. The plains of the Rocky Mountains. Stem stout, about nine inches or a foot high, leafy: 
the leaves about half an inch to an inch wide, and four to six inches long, the segments of the stem 
leaves very short, ending in long spines; capituli three to five; two or three series of inner, 
seariosely appendaged scales. Corolla unequally cleft, ringent; anthers lacerately caudate; pappus 
