OP ARTS AND SCIENCES. 69 



H. Greenei. Leaves villous-hirsute, also on both sides canescent- 

 tomentose with stellular pubescence: scape, peduncles, and involucre 

 cinereous-tomentose. — Pine woods, Scott Mountains, N. California, 

 Greene. 



-(— ^— -J— H— Flowers yellow, 20 or 30 in the oblong heads : akenes 

 fusiform, tapering gradually to a narrow summit, fully as long as 

 the white or whitish and softer pappus : stems scapiform, bearing 

 one or two small leaves toward the base, above only subulate bracts 

 subtending peduncles or simple branches of the panicle : leaves of 

 radical tuft obovate to spatulate, obtuse, entire or minutely denticu- 

 late, contracted into short wing-margined petioles. — § Chionoracium, 

 Schultz Bip. Crepidispermum, Fries, Symb. Heteropleura, Schultz 

 Bip. in Flora, 1861. Transition to Crepis. 



H. Pringlei. Strictly scapose, wholly destitute of setose hairs 

 and of glands : leaves all radical and rosulate, obovate, densely villous- 

 lanate both sides: scape very slender, a foot or two high, minutely 

 soft-pubescent, as also the involucre of the few heads: immature pap- 

 pus bright wliite. — S. Arizona, on the Santa Rita Mountains, Pringle, 

 Lemmon. 



H. Fendleri, Schultz Bip. in Bonplandia, ix. 173. Crepis am- 

 hlgua^ Gray, PI. Fendl. 114. New Mexico, Fendler^ Wright, G. R. 

 Vasey. Colorado, Parry, Hall &, Harbour. Somewhat polymorphous, 

 with either reddish or blackish akenes, and the copious soft pappus 

 sordid-whitish. The first of the subjoined forms is clearly of this 

 species ; probably the other also. 



Var. DISCOLOR. Radical leaves (sometimes large) usually roundish, 

 tinged with crimson-purple beneath: pappus nearly pure white. — 

 Mountains of S. Arizona, Lemmon, Pringle, the latter distributed as 

 ^'■Hieracium erythrospermum, Greene, ined.," vehich, with name changed 

 in publication, is really the following: — 



Var.? MoGOLLENSE. Leaves narrower, not purple-tinged : bristly 

 hairs disposed to be shorter: peduncles minutely and sparsely glandu- 

 lar-setulose : involucre smaller (only 5 lines high): immature akenes 

 reddish : pappus pure white. — H brevipilum, Greene in Bull. Torr, 

 Club, ix. 64. — Mogollon Mountains, New Mexico, Riisby. 



-'—•'—•'—-'—-•— Flowers white or flesh color : akenes slender-colum- 

 nar, hardly if at all narrowed upward, about the length of the 

 bright white soft pappus : stem leafy. 



II. CARNEUM, Greene. Glaucescent, above wholly glabrous and 

 smooth, base of stem, radical leaves, and sparingly some of the cauline, 



