430 COMPOSIT.E. Hieracium. 



++++++++++ Flowers white or flesh-colored: akencs slender-columnar, hardly narrowed 

 upward, about the length of the bright white soft pappus : stem leafy. (Transition to Crepis.) 



H. cameum, Greexe. Wholly glabrous and suiooth except below : stem slender, 2 feet or 

 more high, loosely paniculate-bram-hed, glaucescent, its base and the obloug or lanceolate 

 subsessile radical leaves beset with long villous-setiform hairs : cauline leaves iiarrowly-lauce- 

 olate to liuear, entire, very smooth, some of the lower sparsely piliferous : heads scattered in 

 the corymbiform or irregular panicle : involucre campanulate, 4 or 5 lines high, pale, of 

 narrow linear-lanceolate bracts, I5-20-fiowered : corollas light rose-color: akenes 2 lines 

 long. — Bot. Gazette, vi. 184; Gray, 1. c. G9. — Mountains of New Mexico, Greene. Also 

 coll. by Bigelow or Wr'ujlit. Iluaehuca Mountains, S. Arizona, Lemmon. 



H. JLemnioni, Git.w. Villously or hirsutely setose throughout up to the racemiform close 

 thyrsus: stem simple, 2 feet or more high, very leafy: leaves thinnish, lanceolate-oblong, 

 denticulate with callous or glandular teeth ; cauline partly clasping, acute ; lowest oblong- 

 spatulate, 4 to 7 inches long, tapering into winged petiole.s ; those of radical cluster wanting : 

 heads numerous and crowded in the obloug thyrsus, 4 lines high, 12-20-ilowered : involucre 

 glabrous or nearly so, not glandular, not longer than the canescently puberulent peduncles ; 

 its principal bracts narrowly linear, greenish-livid, obtuse : corollas short, seemingly white : 

 akencs hardly 2 lines long, slender, obscurely if at all narrowed upward when mature but 

 obviously so when younger: pappus less copious than in the preceding, bright wiiite. — 

 Proc. Am. Acad. xix. 70. — S. Arizona, at Bear Spring, Cave Canon, near Fort Huaclmca, 

 Lemmon. A species of Mexican type, of the group Tliijrsoidea of Fries. 

 H. ABSCissuM, Less., a Mexican species (with habit of //. Lcmmoni, but less leafy), probably 



also including //. thyrsoideiim. Fries, is said, in Fries, Epicrisis, 150, to come from " Texas ad 



Malpays de la Jnyas'' (an unrecognized locality), and from " Alabama." 



227. CREPIS, L. (Niime used by Pliny for some now unknown plant, 

 from Kpr]TrL<;, a boot or s;ind:il.) — Chiefly a European genus, of annuals or i)eren- 

 nials, with soft white pappus and narrow-necked or beaked akenes, some with 

 truncate or merely upwardly attenuate akenes ; the involucre apt to be thickened 

 at base, and leaves to be pinnatifid. Flowers in all ours yellow. — Torr. & Gray, 

 FL ii. 487 ; Bcnth. & Hook. Gen. ii. 510. 



* Annu.Tls or hardly biennials, sparingly introduced from Europe : akencs beaklcrs or nearly so: 

 bracts of involucre thickening and becoming more or less rigid at base after aulhesis. 



C. vfuExs, L. A foot or two high, erect or ascending: leaves from dentate to laciniate-pin- 

 natifid, spatulate to lanceolate; cauline with sagittate somewhat clasping base: heads 

 slender-pednncled, small: involucre 3 or 4 lines high: akenes obloug, 10-striate, smooth, 

 slightly and about equally contracted at both ends. — Yill. Fl. Delph. iii. 142. C. poli/rnor- 

 pha, Wallr. ; DC. Prodr. vii. 1G2, mainly. Malacothrix crepoides, Gray, Pacif. R. liep. xii. 

 49, & Crepia Cooperi, Gray, Proc. Am. Acad. ix. 214, a small and diffuse somewhat naked- 

 stemmed form, with scattered heads. — At landings and near towns on the Columbia Kiver, 

 Oregon and Washington Terr., probably at first a baliast-wecd. (Nat. from Eu.) 



C. TECTOuuM, L. Usually more slender: leaves narrow, less or not at all sagittate at base : 

 akenes fusiform, with gradually attenuate summit, upwardly scaljrous on the ribs. — A 

 ballast-weed at New York Harbor. In fields at Lansing, Michigan. (Nat. from Eu.) 



C. BIENNIS, L. Generally larger, more pubescent or hirsute, leafy-stemmed : leaves runcinato- 

 pinnatifid, or some of the lower spatulate au<l barely dentate ; cauline with sagittate-dentato 

 base: involucre 4 to 6 lines high, broadly campanulate, somewhat canescently pubescent and 

 hispidulous: akenes oblong with narrower suunnit, 13-striate, smooth. — Engl. Bot. t. 149; 

 DC. Prodr. vii. 163 (excl. var. Americana) ; Keichenb. Ic. Fl. Germ. t. 1439. — Wa.ste grounds, 

 Vermont, Pringle. (Nat. from Eu.) 



* * Perennials, indigenous westward or northward : akenes bcakless or short-beaked. 



+- Low or depressed, branclied from ba'^e, glaucescent and wliolly glabrous, bearing numerous 

 clustered and narrow short-peduncled heads: involucre cylindrical, 8-14-tlowerod, of 8 to 10 

 smooth and narrowly linear obtuse equal bracts, in a single series (unchanged in fruit except b_v 

 thickened midrib close to the base in C. 7iana), and '■> or 4 short calyculate ones at base: akenes 



