380 DESCRIPTIONS OF NEW SPECIES 



flowered; sepals ovate, the outer series coalescent at the base; pappus about 

 five to seven-leaved, aristate; receptacle conic. 



Hab. 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. 

 Ficradenia, Richardsoni, Hooker, Flor. Bor. Am., p. 317, t. 108. 



Obs. Actinella heterophylla, the type of the present genus, which we can 

 by no means join with CepTialophora, 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- 

 cimen of the A. scaposa; the genus differs from our plants only in the greater 

 number of its pappus scales, which, in Picradenia, are, however, five to seven. 



BURRIELIA. (Decand.) 



Burrielia gracilis; Q, 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. 



Hab. Near St, Barbara, Upper California. Six inches high, branched both below and above. 

 Pappus scales four, lanceolate, with long awns; achenium of the ray flattened, with two aristate 

 pappus scales. Receptacle conic. 



Burrielia *longifolia; O, leaves long, linear, and very narrow, smooth; stem 

 branching from the base, few-flowered; sepals and rays ten to fourteen, the 

 latter oval, shorter than the disk; achenium nearly smooth. 



Hab. With the preceding, to which it is closely allied. Leaves scarcely half a line wide, two 

 inches Jong ; rays much shorter than in the preceding. Pappus four-leaved, awned, that of the 



