384 DESCRIPTIONS OF NEW SPECIES 



oval, bidentate, as long as the disk; sepals united into a hemispherical cup, 

 toothed at its margin ; receptacle conic, papillose. 



HELENIUM. (Linn.) 



Helenium *grandiJlorum; glabrous; leaves elliptic-lanceolate, acute or acu- 

 minate, widely decurrent, the lower ones subserrate; stem branching at the 

 summit; pedicels very long and fastigiate; the linear, acuminate sepals nu- 

 merous, and as long as the large, globular disk; rays flat, three to four-cleft; 

 pappus white, fimbriate, awned, half the length of the discal florets. 



Hab. Banks of the Oregon and Wahlamet ; common. A stout plant, with very large, yellow flow- 

 ers, much like H. autumnale, but never growing so tall, seldom exceeding a foot to eighteen inches, 

 with leaves one to two inches wide, and three to four inches long, very irregularly serrated, often 

 entire; with the rays longer than the disk, and never tubular. Achenium striated with strigose 

 hairs on the ribs, the pappus white, with long awns, and lacerated or fringed at the sides. Re- 

 markable for its large flowers, dwarf size, and very long pedicels meeting in a sort of corymb. 

 Stigmas exserted, smooth. Rays very long, and pubescent externally. 



Helenium * montanum; minutely pulverulent, pubescent; leaves lanceolate, 

 decurrent, subserrate; flowers corymbose, on short pedicels; sepals linear, 

 shorter than the disk; rays flat, mostly three-toothed; pappus acuminate, long- 

 awned, half the length of the floret. 



Hab. In the Rocky Mountain range, on the borders of Lewis' River, &c., twelve to eighteen 

 inches high, the upper part hoary with pubescence. It has much the appearance of a dwarf variety 

 of H. autumnale, but is more pubescent, smaller flowered, and with a much longer awned pappus. 



Helenium * parvijlorum; smooth ; the stem much branched and divaricate, 

 slightly angular; leaves lanceolate, or oblong-lanceolate, here and there subser- 

 rulate, scarcely decurrent; involucrum shorter than the disk; sepals filiform; 

 rays flat, three-toothed, narrow; achenium rather smooth; pappus awned, half 

 the length of the floret; flowers scattered, solitary or by pairs. 



Hab. In Georgia. A very distinct and well marked species, scarcely at all bitter to the taste. 

 Flowers scattered, not fastigiate, scarcely half the size of those of H. autumnale, to which this 

 species has an affinity, the leaves are also generally entire and scarcely decurrent. Rays slightly 

 pubescent externally. 



§.. II. Tetrodus. (Decand.) Biscal florets four-toothed. 



Helenium * nudiflorum; glabrous; leaves remote, above small, lanceolate, de- 

 current, entire; stem tall, the summit divaricate and almost naked, few-flow- 



