AND GENERA OF PLANTS. 335 
Agel, tufted alpine, only three or four inches high. Stems like scapes, bearing one or two small 
leaves. a 
Stenotus cespitosus; somewhat ceespitose or tufted ; pat Ae one 
late, smooth, three-nerved, scabrous on the in; stems scapoid, one to four- 
flowered; involucrum hemispherical. , the membranaceous scales ovate, acute; 
rays about twelve; achenium sericeous. Chrysopsis cespitosus; Journ. Acad., 
Vol. VIL, p. 34. ; 
Has. Towards t S 0 
More than twice as et as ‘the preceding. Root somewhat ligneous. Leaves very acute, those 
of the Missouri and the Platte, in the range of the Rocky Mountains. 
of the stem two or three in number, wide, sessile, and somewhat lanceolate; peduncles very long. 
Pappus white; achenium brightly and closely sericeous, linear-oblong. Stigmas much exserted. 
Very nearly allied to the preceding. 
Stenotus * Armerioides, hat cespitose or tufted, caudex ligneous; leaves 
linear, slightly lanceolate, more or less glutinous, as well as ae involucrum, 
scabrous on the margin; stems almost wholly naked, scapc 
flowered, peduncles very long, scales of the short involucrum broadly mem- 
branaceous, oval, obtuse; rays about twelve; stigma lanceolate ; achenium dense- 
ly sericeous, about the length of the short white pappus. 
Haz. Towards the sources of the Platte, in the Rocky Mountain range, on shelving rocks. 
About a span high, with a large, distinctly woody root, of great length. Leaves three or four 
inches long, little more than a line wide, rigid and coriaceous, resinously viscid, in a slight d gr 
three-nerved, all linear, about two leaves on the stem; peduncles two to three inches long; ; the 
stems appearing | entirely like scapes. Involucrum imbricated in about two series, much shorter 
than the florets. Stigma unusually thick and large, puberulous, Achenium very thickly covered 
with | ky hairs, as in the true species of Aplopappus. The plant, at first glance, has much the 
appearance of an Armeria. saga to the preceding, but perfectly distinct. 
2 z 
§ I. * Oonopsis.—Involucrum small, soatemuaehtatiin linear, pappus fulvous. 
Stenotus * multicaulis; dwarf, subcespitose, many-stemmed; leaves linear, 
radical obtuse, cauline acute; stems slender, one to three-flowered ; flowers ses- 
sile; involucrum ovate, lanuginous, scales acuminate; rays about eight; ache- 
nium pubescent, . linear. 
on the western declivity of the Rocky Mountains. A remarkable species, forming 
dense tufts, with leave two to three inches long and about a line wide, the primary ones obtuse, 
the rest acute, the upper ones pubescent. Stems many, scarcely rising more than an inch above the 
leaves, slender like peduncles, terminating in one to three fastigiate flowers, which are sessile, or 
ie 
