

 Crepis. COMPOSITE. 435 



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

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

 of the Mexican Boundary. 



3. Pappus wholly wanting : otherwise 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, dilated-cuneiform and nearly sessile, almost truncate, 

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

 loosely corymbose at the summit and bearing numerous small heads : 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. CREPIS, 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-shaped towards the 

 base by the thickening and induration of the midrib. Eeceptacle flat, 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. & 

 Gray, Fl. ii. 487; Benth. & Hook. Gen. PI. ii. 511. 



* Minutely cinereous-tomentose : stems clustered from a perennial root : leaves lacini- 

 ately pinnatifid into narrow lobes or teeth: involucre of equal linear principal scales 

 and a feiv short calyculate ones: akenes fusiform, not beaked, smooth, 10-striate- 

 ribbed, as long as the pappus. 



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

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

 natifid or pinuately parted, broadly lanceolate in outline, with the apex acute or 

 rarely prolonged: involucre 12 - 30-flowered, furfuraceous-tomentose, occasionally 

 beset 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, Xutt. in Trans. Am. Phil. Soc. n. ser. vii. 437. 



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

 finely somewhat twice pinnately parted leaves ; and var. subacaidis, Kellogg, is a 

 much-reduced state of the same. 



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

 strongly ribbed, sometimes hardly narrowed at the summit, sometimes 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 Californian specimens glandular. 



Dry hills, from Mendocino Co. and throughout northeastern portions of the Sierra Nevada to 

 Washington Territory, Montana, and Colorado. The var. Nevadensis occurs at Summit, Nevada 

 Co., &c. A form of var. costata, Sierra Co., Lemmon. The glandular state of var. crinita, Sierra 

 and Plumas Co., Lemmon, Mrs. Palsifer Ames. The foliage, heads, and akenes of this species 

 are not a little variable. Nuttall could have seen no well-formed fruit, for he describes the 

 akenes as not striate. 



