324 DESCRIPTIONS OF NEW SPECIES 
Has. In the Rocky Mountain plains, near Lewis’ River, common. Flowering in August. 8. 
*albicaulis; stem. densely and whitely tomentose; perhaps a distinct species. Showy shrubs, 
three or four feet high, with numerous virgate branches, like the common Broom, Leaves one- 
nerved, scarcely half a line wide, one and a half to two inches long. Flowers abundant, brilliant 
yellow. | 
Lad 
Chrysothamnus dracunculoides. Bigelonia dracunculoides, Decanv., Vol. V. 
p- 329. 
Has. Rocky Mountain plains, near the banks of the Platte and Missouri. A shrub three to 
five feet high, with a heavy, unpleasant, though somewhat aromatic odour. 
Chrysothamnus viscidiflorus. Crinitaria viscidiflora, Hoox. Flor. Bor. Am., 
Vol. IL, p. 24. With this plant [am unacquainted, but it agrees well with 
the present genus. 
+ Capitulum siz to eight-flowered; stigma ligulate. 
Chrysothamnus lanceolatus; shrubby, nearly smooth; leaves linear-lanceolate, 
acute, three-nerved, somewhat glutinous; capituli corymbosely clustered, six 
to eight-flowered; stigma ligulate, pubescent at the apex. 
Has. In the Rocky Mountains, toward the sources of the Platte, and on the banks of Lewis’ 
River of the Oregon. A moderate-sized shrub, with broader leaves than usual, one to one and a 
half inches long, by three to four lines wide, slightly puberulous. Involucrum of about four series 
of ovate, concave, acute scales. Stigma exserted, flat, with an ovate puberulous apex, something 
like that of the true Bigelowias. Pappus white, not abundant, scabrous. Florets pale yellow. 
CHRYSOMA. 
(Nurr., Journ. Acad. Nat. Sci. Philad., Vol. VIL., p. 67.) 
Capitulum heterogamous, about five-flowered; liguli feminine, one to three, 
_short and oval. : Receptacle narrow, naked, alveolate, the central point ele- 
vated. Involucrum imbricate, the scales carinate, the inner ones longer. 
Achenium oblong, compressed, smooth, or somewhat pubescent. Pap- 
‘pus simple, pilose, scabrous, the rays numerous.—Shrubby, suffruticose or 
perennial? plants, with entire (or serrated) rigid, lanceolate leaves, opaque, 
or pellucidly punctate. Flowers in fastigiate, corymbose clusters, wholly 
yellow.—Allied to Bigelonia, but distinguished by the presence of liguli; to 
Euthamia, but the liguli only about two; from Sodago in the same manner, 
and also by the whole habit. 
