430 COMPOSITE. Hieracium. 



H- -H- -W- -H- -H- Flowers white or flesh-colored: akcnes slender-columnar, hardly narrowed 

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



H. cameum, GREENE. Wholly glabrous and smooth except below : stem slender, 2 feet or 

 more high, loosely paniculate-branched, glaucescent, its base and the oblong or lanceolate 

 subsessile radical leaves beset with long villous-setiform hairs : cauliue leaves narrowly-lance- 

 olate to linear, 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, 15-20-flowered : corollas light rose-color: akenes 2 lines 

 long. Bot. Gazette, vi. 184; Gray, 1. c. 69. Mountains of New Mexico, Greene. Also 

 coll. by Bigclow or Wriyht. Huachuca Mountains, S. Arizona, Lemmon. 



H. Leninioni, GRAY. Villously or hirsutely setose throughout up to the racemiform close 

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

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

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

 heads numerous and crowded in the oblong thyrsus, 4 lines high, 12-20-rlowered: 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 : 

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

 obviously so when younger : pappxis less copious than in the preceding, bright white. 

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

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

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



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



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



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

 from KprjTTLs, a boot or sandal.) Chiefly a European genus, of annuals or peren- 

 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 pinnatiCd. Flowers in all ours yellow. Torr. & Gray, 

 Fl. ii. 47; Benth. & Hook. Gen. ii. 513. 



* Annuals or hardly biennials, sparingly introduced from Europe : akenes bcaklcss or nearly so: 

 bracts of involucre thickening and becoming more or less rigid at base after anthe.-i-. 



C. vfnExs, 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-peduucled, small: involucre 3 or 4 lines high: akenes oblong, 10-striate, smooth, 

 slightly and about equally contracted at both ends. Yill. Fl. Delph. iii. 142. C. jwlymor- 

 phn, Wallr.; DC. Prodr. vii. 1G2, mainly. Mnlai-otliri.c crt.ji<>/tli.x, Gray, Pacif. H. Rep. xii. 

 49, & Crr-pis Cooper i, Grav, Proc. Am. Acad. ix. 214, a small and diffuse somewhat naked- 

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

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



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

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

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



C. BTEXNIS, L. Generally larger, more pubescent or hirsute, leafy -stemmed : leaves ruucinate- 

 pinnatind, or 'some of the lower spatulate and barely dentate; cauline with sagittate-dentate 

 base: involucre 4 to G lines high, broadly campanulate, somewhat cauesceutly pubescent and 

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

 DC. Prodr. vii. 1G3 (excl. var. Ann r/ctniu) ; Reichenb. Ic. Fl. Germ. t. 1439. Waste grounds, 

 Vermont, Prinrjlr. (Nat. from Eu.) 



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



+- Low or depressed, branched from base, glaucescent and wholly glabrous, bearing numerous 

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

 smooth and narrowlv linear obtuse equal bracts, in a single series (unchanged in fruit except by 

 thickened midrib close to the base in C. nann), and 3 or 4 short calyculate ones at base: akenes 



