Cr&pis. COMPOSITE. 431 



narrow, 10-s(riate, the summit with a more or less dilated disk bearing the soft deciduous pap- 

 pus. — I'ouTtt/la, Ledeb., &c., not Cass. 



C. nana, Hichards. Forming depressed tnfts ou slender creeping rootstocks : leaves 

 chiefly radical (inch or two long, including petiole or attenuate base), obovate to spatulate, 

 entire, repand-deutate, or lyrate, commonly equalling the clustered scapes or stems : heads 

 ill fruit half-inch high or nearly : akeues linear, unequally costatc, obscurely contracted 

 under tlie moderately dilated pappiferous disk. — App. Frankl. Journ. ed. 2, 92; Ilook. 

 App. Parry Voy. 397, t. 1, & Fl. i. 297 ; Torr. & Gray, Fl. ii. 488. Hierucium, etc., Gmel. Fl. 

 Sibir. ii. 20, t. 7. Prenanthes p!/gmaa, Ledeb. iu ]\Iem. Acad. Petrop. v. 553. P. poli/morpha, 

 Ledeb. Fl. Alt. iv. 144. Darkluiusia nana, DC. Prodr. vii. 156. Yoiingia pi/gmwa, Ledeb. 

 Fl. Ross. ii. 838. — Arctic coast and islands, and alpine mountain summits south to Colorado 

 and the Sierra Nevada in California. (N. Asia.) 



C. elegans. Hook. Many-stemmed from a perennial tap-root, a span to a foot high, 

 diffusely branched : leaves entire or nearly so; radical spatulate, cauline from lanceolate to 

 linear: heads smaller or narrower than iu the preceding: akenes linear-fusiform, minutely 

 scabrous on the equal narrow ribs, attenuate into a short slender beak, which is discoid 

 dilated at summit. — Fl. i. 297 ; DC. Prodr. vii. 172 ; Torr. & Gray, 1. c. Burkhausia elegans, 

 Nutt. Trans. Am. Phil. Soc. vii. 435. — Saskatchewan district to Dakota and Montana; first 

 coll. by Drummond. 



-I— -1— More robust and taller, with scapiform or few-leaved stems and larger heads: akenes 



thicker, not discoid-dilated at the insertion of the pappus. 

 ++ No furfuraceous or canescent pubescence: foliage mostly glabrous: involucre campanulate, 

 nianj^-flowered; its bracts lanceolate or linear, acute, little thickened beluw after flowering: 

 thick root possibly- biennial, probably perennial: heads few or several and loosely corynibosel^' 

 cymose: pappus not remarkably copious. — Crepidium, Nutt. 

 C. glauca, ToRK. & Gkay. Usually scapose, a foot or two high, glaucescent or glaucous : 

 radical leaves from obovate-spatulate to lauceokxte, from entire to lacini;ite-i)iunatifid : invo- 

 lucre 4 lines high, glabrous or nearly so, as also the peduncles : akenes oblong, with slightly 

 narrowed summit, strongly and evenly 10-costate. — Fl. ii. 488 ; Eaton, Pot. King Exp. 203; 

 Gray, Bot. Calif, i. 43G. Crc/jaZ/um f//«i(C!(m, Nutt. Trans. Am. Phil. Soc. vii. 436. — Moist 

 and saline ground, Saskatchewan and Nebraska, Utah and Nevada. Probably Arizona 

 (Ruthrock), but specimen too young and leafy, and peduncles sparingl}- hispidulous-glandu- 

 lar. Crepidium caidcscens, Nutt. 1. c, is probably a somewhat leafy-stemmed form. 

 C. runcinata, Tokk. & Gk.vy, 1. c. Not glaucous or slightly so, a foot or two high: radi- 

 cal leaves obovate-oblong to oblong-lanceolate, from repand to runcinate-pinnatifid with short 

 lobes or teeth ; cauline none, or small and narrow at the forks : involucre luilf-incli high or 

 smaller, pubescent, often hirsute, sometimes (with peduncles and upper part of scape) 

 glandular-hispidulous : akenes narrowly oblong, moderately narrowed upward, somewhat 

 evenly 10-costate. — C. biennis, var.. Hook. Fl. 1.297, not L. C. biennis, var. Americana, 

 DC. Prodr. vii. 1G3. Ilieraciuni runcinutum, James iu Long Exped. i. 453 ; Torr. in Ann. 

 Lye. N. Y. ii. 209. Crepidium runcinutum, Nutt. 1. c. — Saskatchewan to Montana and 

 south to Colorado and Utah, iu subalpiue swamps; first coll. by James. 

 C. Andersoni, Gr\y. Not glaucous, a foot or more high; leaves laciniately pinnatifid or 

 dentate, but not ruucinate : involucre half to three-fourths inch high, cinereous-pubescent, of 

 broader and firmer bracts, more imbricated, outermost oblong- to ovate-lanceolate : akenes 

 fusiform, unequally 8-10-costate, tapering into a short but manifest be;ik. — Proc. Am. 

 Acad. vi. 553, & Bot. Calif, i. 436. — Eastern Sierra Nevada, California and adjacent Nevada, 

 ill low grounds : a form with a cauline leaf or two in uplands ; first coll. by Anderson. 

 -H- -H- Furfuraceous- or cinereous-pubescent, at least the foliage, sometimes also hirsute, deep- 

 rooted perennials, more or less leafy-stemmed: akenes oblong to fusiform, beakless, 10-12-cos- 

 tate: pappus of very copious bristles, persistent: bracts of involucre at length with more or 

 less thickened or carinate midrib, at least the base: leaves usually laciniate-pinuatifid. — Crepis 

 § Lepto'hecn & Pxilochenia, Nutt. Trans. Am. Piiil. Soc. vii. 437, but false character of akenes 

 of the latter, and outer flowers not sterile. Species difficult. 

 = Principal bracts of the narrow involucre and (lowers 5 to 8: no hirsute pubescence: pappus 

 moderately copious and soft. 

 C. acuminata, Nutt. 1. c. Minutely cinereonsly-puberulent below, but green: stem slen- 

 der, 1 to 3 feet high, 1-3-leaved, bearing a fastigiate or corymbiform cyme of uumerous 



