hieracium COMPOSITE 395 



and few- to many-flowered. Achenes in a few species slender or 

 tapering to the summit. Pappus of more or less scanty equal 

 bristles. 



* Crinite-hirsute with long and whitish or yellowish shaggy hairs, 

 especially on both sides of the entire leaves: flowers yellow: achenes 

 columnar and short, not at all narrowed upward. 



H. loii giber foe. Whole plant sparsely covered with long Foft hairs : 

 stems usually slender and ascending or suberect, 6-18 inches long: leaves 

 lanceolate, entire or sparingly dentate. 3-6 inches long: heads rather few, 

 in an irregular panicle: involucre rampanulate, 6 lines high, of 10-20 lan- 

 ceolate acuminate principal bracts with smaller calyculate ones at their 

 base, all densely clothed with long spreading hairs, not glandular. On 

 cliffs along the Columbia river near the Cascades. 



H. Scouleri Ho k. Fl. i, 198. Sparingly pubescent with long crisp 

 hairs, pale and more cr less glaucescent: stems 1-2 feet high, very leafy : 

 leaves lanceolate, sessi e or the lowest short-petioled, 2-6 inches long : heads 

 rather few, in a loose irregular panicle: involucre 6 lines high; its bracts 

 linear-lanceolate, often acuminate, imbricated in 2 or 3 series, the outer 

 successively shorter, all bes-et with long bristly hairs, and more or less 

 glandular: pappus whitish. Brit. Columbia to Oregon and Montana. 



* * Crinitely long-villous with soft-woolly and blackish smooth 

 hairs above, wanting below : without stellate or glandular pubescence : 

 flowers yellow: pappus fuscous. 



H. triste Cham, in herb. Willd. Stems simple, 4-12 inches high, 

 few-leaved, bearing solitary or 2-4 racemosely disposed small heads: 

 radical leaves obovate to spatulate, entire, green and glabrate, or with 

 sparse pale hairs; cauline oblong, upper ones and stem more or less vill- 

 ous-lanate: heads half-inch high, livid: involucre and peduncle densely 

 clothed with long dark-brown or partly grayish soft wool. Aleutian Is- 

 lands to northern Washington. 



* * * Dark-hirsute and somewhat glandular on the involucre: leaves 

 and lower part of stems glabrous, or at most pubescent : flowers yellow. 



H. gracile Hook. Fl. i, 298. Pale green and more or less pubescent : 

 stems tufted, slender, 2-18 inches high : leaves mostly in radical cluster, 

 obovate to oblong-spatulate, 1-3 inches long, attenuate below to petioles, 

 entire or repand-dentate : he -ids few to several, racernously disposed, tbe 

 lower linear-bracteate : involucre about 4 lines high, its numerous linear 

 bracts all nearly equal, beset with short black somewhat hispid hairs 

 and also tomentose and glandular: achenes short-columnar: pappus al- 

 most white. In open places on the highest peaks; Alaska to California 

 and the Rocky Mountains. 



* * * * Not crinite but at least the radical leaves and base of the 

 • stem sparsely or even thickly setose-hirsute with spread ng hairs. 



+- Flowers white : stems leafy, and in large plants loosely branching 



H. albiflorum Hook. 1. c. Stems slender, 1-3 feet high, bearing few 

 to numerous small heads in an open, simple or compound paniculate 

 cyme: leaves oblong to broadly lanceolate, thin, 1-4 inches long; the 

 upper sessile by a broad base, the lower tapering into slender petioles: 

 involucre campanulate, 4-5 lines high, of several linear-lanceolate acute 

 bracts, imbricated in 2 or 3 ranks, the outer successively shorter, glabrous 

 or nearly so, not rarely with a few bristly hairs: achenes black, a line 

 long. Common in dry wooded districts, A-laska to California and the 

 Rocky Mountains. 



