Crepis. COMPOSITE. 435 



Santa Barbara (NnttalT), and in the southern part of the State (Coulter), to the valley of the 

 Gila, Schotl. There are no persistent biistlos to the pappus, as is wrongly stated in the Botany 

 of the Mexican Boundary. 



§ 3. Pappus wholly wanting : otlterwise as in Malacothrix proper : flowers white 

 and purple. — Anathrix, Gray. 



11. M. platyphylla, Gray, 1. c. Annual, glabrous or nearly so, somewhat 

 glaucous : leaves all radical, dUated-cuneiform ami nearly sessile, almost truncate, 

 acutely and unequally dentate or denticulate : scape naked, a loot or two high, 

 loosely corymbose at the summit ami bearing numerous small beads : involucre of 

 oblong equal scales and a few very short calyculate ones. 



Gravelly soil near Fort Mohave, Dr. Cooper. Involucre campanulate, about 3 lines high : 

 ligules of nearly twice that length. Leaves 2 or 3 inches long, thin, veiny. The fruit is as yet 

 unknown. 



117. CBEPIS, Linn. 



Head several - many-flowered. Involucre cylindraceous or campanulate, usually 

 double ; viz. the principal scales equal, with some short calyculate ones at base, 

 rarely more imbricated, in fruit often becoming carinate or boat-sharjed towards the 

 base by the thickening and induration of the midrib. Receptacle Hat, naked, some- 

 times alveolate. Akenes oblong; linear, or fusiform, nearly terete or obtusely 

 angled, 10 - 20-ribbed, generally somewhat contracted at base and more tapering at 

 summit, sometimes even beaked. Pappus simple, of copious and white capillary 

 merely scabrous bristles, which are either persistent or singly deciduous. — Herbs, 

 of various habit and wide distribution (mainly of the northern temperate regions 

 of the Old World), commonly with middle-sized heads of yellow flowers. — Torr. & 

 Cray, PL ii. 487; Benth. & Hook. Gen. PI. ii. 511. 



* Minute/// cincreous-tomentose : stems clustered from a perennial rout : leaves lucini- 

 ate/u pimialijid in/" narrmi' lobes or inlh : involucre of a/nal lunar principal scales 

 and a few short calyculate ones: akenes fusiform, not beaked, smooth, \0-striate- 

 ribbed, as lone/ as the pappus. 



1. C. occidentalis, Xutt. Dwarf or stout : stem a span to a foot or so high, 

 few leaved, bearing few beads, mostly on thickish peduncles: leaves runcinately pin- 

 natifid or pinnately parted, broadly lanceolate in outline, with the apex acute <>r 

 rarely prolonged: involucre 12 — 30-flowered, rarfuraceous-tomentose, occasionally 

 b i with scattered and brownish bristles; the principal scales 8 to 15: akenes 

 with tapering summit, striate with 10 even and strong narrow ribs. — Psilochenia 

 occidentalis, Null, in Trans. Am. Phil. Soc. n. ser. vii. 4.57. 



Var. Nevadensis, Kellogg, in Proc. Calif A.cad. v. 50, is a dwarf form, with 

 finely Bomewhat twice pinnately parte. I leaves; and var. subacatdis, Kellogg, is a 

 much reduced state of tlie same. 



Var, costata, dwarf or stout, with many-flowered beads, has the akenes very 

 t rongly ribbed, sometimes hardly nan-owed at the summit, sum. limes conspicuously 

 narrowed. 



Var. crinita, from Washington Territory, is shaggy with long brownish or 

 yellowish hairs on the peduncles and involucre; the bristly hairs in somewhat 

 similar < 'alifomiaii specimens glandular. 



Dry hills, from Mendocino Co, and tliroughout northeastorn portions of the Sierra Novadn to 

 Washington Territory, Montana, and Colorado. Tho var. Nevadensis occur i1 Summit, v 

 Co., &c. 4V form of var. i Uata, Sierra Co., Lemman, Tho glandular state of vat , Siorm 



and Plumas Co., Lemmmi, Mr.. Pulsifer Ames. The foliage, heads, andakonesof this 

 are nol o little variable, N ut tall could have seen no well-formed fruit, for hi describes the 

 akonos as nol stt into. 



