428 COMPOSITE. Hieracium. 



-i — -i — -i — -! — Not crinite (yet sometimes scattered bristles on the involucre and panicle), but at 

 least the radical leaves and base of stem sparsely or even thickly setose-hirsute with long 

 spreading hairs. 



++ Flowers white : stems leafy and in larger plants loosely branching, depauperate or subalpine 

 plants even scapose: involucre 18-30-flowered : akenes linear-columnar (only a line and a half 

 long), not at all narrowed upward: pappus sordid: leaves entire or denticulate. 



H. albiflorum, Hook. A foot to a yard high, smaller plants with simple and larger with 

 compound open corymbiform-paniculate cyme : leaves oblong, thin (2 to 4 or larger 5 to 6 

 inches long), upper with usually narrowed sessile base, lower tapering into petiole : involucre 

 narrow-campanulate, 4 or 5 lines high, of linear-lanceolate bracts, pale or livid, mostly gla- 

 brous or nearly so, not rarely a few bristly hairs. — Fl. i. 298 ; Torr. & Gray, Fl. ii. 479 ; 

 Fries, Symb. Hier. 143; Gray, Bot. Calif, i. 440. — Open dry woods, Rocky Mountains, 

 from lat. 56° to Colorado and Utah, and Brit. Columbia to mountains of S. California; first 

 coll. by Drummond. H. Vancouverianum, Arvet-Touvet, Spicil. Hier. 10 (at least specimens 

 coll. Lyall distributed from Kew as "H. Scouleri"), is of this species, and doubtless white- 

 flowered. 



++ ++ Flowers yellow: stems more or less leafy, except in var. of H. cynoglossoides : involucre 

 15-30-flowered, oblong-campanulate, of rather numerous narrow and acute or acutish bracts : 

 akenes columnar, not at all tapering upward, not over a line and a half long: pappus from sor- 

 did to dull white. 



= Leaves or many of them salient-dentate : pappus whitish. 

 H. argutum, Nutt. A foot or two high, slender, hirsute with long shaggy hairs at base of 

 stem, glabrous or merely puberulent above and throughout the very lax diffuse naked pani- 

 cle : leaves numerous at and near the base of the stem, broadly lanceolate (or radical oblong- 

 spatulate), acute or acuminate, tapering into margined petioles, larger ones 4 inches long, 

 half or two-thirds inch wide, each margin with 4 or 5 salient triangular teeth ; upper ones 

 linear and entire, much reduced in size (1 to 3 lines wide) : peduncles elongated and witli 

 the involucre more or less dark-glandular, sometimes a few scattered dark hairs. — Trans. 

 Am. Phil. Soc. vii. 447. — Hills behind Santa Barbara, California, Natlall (specimen not 

 seen), Rothroek, who found it in Bartlett's Canon, young, color of flowers uncertain; Santa 

 Lucia Mountains, Parry, an almost naked-stemmed form with radical leaves merely dentic- 

 ulate, the involucre and peduncles less glandular and more scurfy-puberulent ; corollas cer- 

 tainly yellow. Also coll. by Hoznke? if Pilosella arguta, Schultz Bip. in Flora, 1862, 438. 

 H. Parishii, Gkay. Leafy up into the narrowly oblong panicle, puberulent above, with no 

 glandular hairs or stipitate glands: lower leaves shaggy-hirsute (along with base of stem), 

 elongated-lanceolate (5 to 8 inches long, half-inch or more wide), tapering to the base or 

 margined petiole, with 5 to 8 salient teeth to each margin ; upper leaves linear-lanceolate, 

 entire, those subtending lower branches of panicle (2 inches long) little shorter than they: 

 peduncles seldom much longer and often shorter than the heads : involucre pale, granulose- 

 puberulent. — Proc. Am. Apad. xix. 67. — Rock-crevices, San Bernardino Mountains, S. E. 

 California, Parish. 



= = Leaves all entire, or merely repand, or slightly denticulate. 



H. Rlisbyi, Greene. Leafy-stemmed, 2 feet or more high, bearing numerous compound- 

 paniculate heads : stem hirsute below, above smooth and glabrous up to the rather short- 

 peduncled heads : leaves all elongated-oblong ; cauline little diminished in size upward (3 or 4 

 inches long), quite entire, mostly half-clasping at base : involucre 3 lines high, pale, barely 

 puberulent: akenes short-columnar, blackish: pappus sordid. — Bull. Torr. Club, ix. 64; 

 Gray, Proc. Am. Acad. xix. 69. — Mogollon Mountains, New Mexico, Rusby. 



Var. "Wrightii, Gray, 1. c. More robust and branching : bristles of the stem truly 

 hispid from papilliform base': branches and even peduncles setulose-hispidulous, and the latter 

 obscurely glandular : sometimes a few small bristles near the tips of the involucral bracts : 

 pappus dull white. — Crepis ambigua, Gray, PL AVright. i. 129, not PI. Fendl. — W. borders 

 of Texas, between the Limpio and the Rio Grande, Wright. 



H. cynoglossoides, Arvet. Stem a foot or less high (either from naked base or more 

 commonly a radical tuft of leaves), simple, 2-several-leaved, bearing few or several cymosely 

 disposed heads, setose-hirsute or hispid at base, either hispidulous or glabrous above : leaves 

 lanceolate to spatulate-oblong, at least the lower conspicuously setose-hirsute ; upper some- 



