rd 
378 DESCRIPTIONS OF NEW SPECIES 
flowers corymbose; sepals oblong or lanceolate, longer than the disk; ache- 
nium linear, elongated, pilose, more than twice as long as the pappus.—Bahia 
Ambrosioides; (LAGASCA.) 
Has. Chili. (Dr. Styles.) A small under shrub, more or less gray and puberulous; leaves 
opposite, trifid, or twice trifid, the segments oblong and incise; flowers corymbose, with the rays 
longer than the disk, The discal florets and involucrum almost that of Hymenopappus, to which 
it is intimately related. Flowers by threes, six to nine in a corymb. . 
Stylesia * puberula; minutely pubescent; leaves ternately bipinnatifid, petio- 
late, segments oblong or cuneate-oblong, somewhat obtuse; flowers corymbose; 
sepals ovate, glandularly pubescent; achentom obconic, scarcely longer than. 
the pappus. 
Has. Chili, (Dr. Styles.) Nearly allied to the preceding. A shrub, with rather stout branches, 
the stems very full of leaves in the axills, Flowers corymbose, probably white? Rays five or 
six. The involucrum nearly hemispherical. Pappus brown, shorter than in the preceding; the 
achenium, also, not more than half the length of that species. Leaves in three principal divisions, 
the lowest segment pinnatifid, the upper and terminal merely bifid or trifid. 
ACTINELLA. (Persoon.) 
Capitulum heterogamous, many-flowered ; rays feminine, cuneate, three-toothed. 
Involucrum hemispherical or subeampanulate, biserial, shorter than the flo- 
rets; sepals nearly equal. Receptacle naked, convex or conic; discal florets 
short and tubular, five-toothed, villous at the summit; anthers included. 
Stigmas revolute, obtuse, externally hispid, inappendiculate, in the ray. fili- 
form and smooth. Achenium turbinate, subcylindric, striate, densely pilose. 
Pappus of about five to twelve membranaceous, aristate palew, eroded on 
their margins.—Herbaceous or suffruticose plants of North and South Ame- 
rica. Stemless or branching; leaves entire, incise, or pinnatifid; flowers pe- 
dicellate, solitary, mostly yellow. | 
+ Stem herbaceous, leafless, scapoid; the leaves radical, and mostly entire. 
Actinella acaulis; Nutr. Gen. Am., Vol. IL, p. 173. Galardia acaulis; 
Pursn, Vol. II., p. 743. Cephalophora iui. Decanp., Vol. V., p. 663. 
Leaves softly and sericeously villous, canescent, in cespitose tufts. Root long, 
thick and fusiform; scapes sometimes, though very. rarely, with a a leaf. 
Rays ten to twelve. Receptacle convex. 
Has. Hills towards the sources of the Platte, in chalky soil. 
