. 
380 DESCRIPTIONS OF NEW SPECIES 
flowered; sepals ovate, the outer series coalescent at the base; pappus about 
five to seven-leaved, aristate; receptacle conic. 
Haz. Upper Canada, Carlton-House, on the Sascatchewan. A strict congener with the pre- 
ceding, of which several species have also the pellucid bitter resinous glands on the corolla. 
Picradenia, Richardsoni, Hooxer, Flor. Bor. Am., p. 317, t. 108. 
Oss. Actinella heterophylla, the type of the present genus, which we can 
by no means join with Cephalophora, is a suffruticose, somewhat minutely hir- 
sute, much branched, apparently decumbent plant; the leaves linear, alternate, 
rather crowded, some of them irregularly and incisely lobed, the lobes seldom 
more than a single pair; they are also covered with impressed, globular glands, 
which communicate to the plant, as in Picradenia, an intense bitter taste; the 
branches terminate each in a single, long, pedicellated capitulum; the invo- 
lucrum is very short, consisting of a double series of tomentose, narrow sepals, 
the outer lanceolate. Receptacle convex. Achenium turbinate, subcylindric, 
covered with dense and shining brown hair. The pappus a crown of ten to 
twelve narrow-lanceolate, membranaceous scales, each with a strong, brown, 
central nerve going out into a long, slender awn. — Rays numerous, cuneate, 
three-toothed, apparently ochroleucous, or white, externally brownish, as in the 
flowers of Gaillardia. A branch of this plant almost wholly resembles a spe- 
of the A. scaposa; the genus differs from our plants only in the greater 
ye 
‘ number of its pappus scales, which, in Picradenia, are, however, five to seven. 
BURRIELIA. = (Decand.) 
Burrieha gracilis; ©, above minutely hirsute; below smooth; stem often 
branching from the base; flowers fastigiate; leaves long and linear; rays and 
Sepals ten to fourteen, the rays longer than the disk; achenium minutely sca- 
brous. 
Has. Near St. Bashen Seat California. — ‘Six inches high, branched both below and above. 
Pappus scales four, lanceolate, with long eis Achenium of the ray flattened, with two aristate. 
pappus scales. Receptacle conic. 
Burrielia * longifolia; ©, leaves long, linear, and very narrow, smooth; stem 
-branching from the base, for flee sepals and rays ten to Gries, the 
latter oval, shorter than the disk; achenium nearly smooth. 
Has. With the preceding, to which it is closely allied. Leaves scarcely half a line wide, two 
inches long; rays much shorter than in the preceding. Pappus four-leaved, awned, that of the 
