CATALOGUE. 201 



of the upper branchlets ; involucre 4" long, of 5-7 unequal lanceolate acute 

 imbricated scales, with 2-3 minute calyculate bractlets ; flowers 3-5, the 

 ligules twice as long as the involucre ; achenia not tapering upward ; pappus 

 rather rigid, 24" long. — " In the Eocky Mountain plains towards California," 

 (Nuttall;) California, (Brewer;) Mount Davidson, Nevada, (Bloomer.) Foot- 

 hills and gravelly hillsides. East Humboldt Mountains, Ruby Valley, and at 

 the head of Humboldt River; 6,000 feet elevation; August, September. 

 Flowers almost always three. The lower leaves are apparently membranous 

 or grass-like, as they quickly perish, leaving only vestiges hidden in the 

 peculiar masses of brownish-white wool. (708.) 



Malacotheix^ Califoenica, DC. Annual, villous-lanate or becoming 

 smooth ; stems several, 8-12' high, scapiform and monocephalous or with 

 1-2 smaller heads from the axils of cauline leaves ; radical leaves numerous, 

 3-6' long, sometimes entire, but usually pinnately divided into 5-9 distant 

 very narrow almost filiform entire segments ; involucre campanulate, of many 

 unequal lanceolate scales imbricated in several rows ; flowers yellow, very 

 numerous ; achenia scabrellate on the primary ridges ; outer pappus cup-like, 

 with a hyaline and slightly pectinate border, two of the teeth developed into 

 strong awn-like setse, as long as the 12-15 nearly smooth deciduous capillary 

 bristles of the inner pappus. — Heads as large as a dandelion or even larger, 

 the ligules 4-5-toothed. The two outer setae of the pappus are not opposite, 

 but both on one side of the achenium, and the same arrangement is seen in 

 M. Coulteri. California, (Douglas, Brewer !) Var. glabeata, Grray, Ms. 

 Glabrous throughout, even when young. — Carson City, (Anderson !) Foot- 

 hills of the Trinity Mountains, Nevada ; 4,500 feet elevation. (709.) 



Malacotheix sonchoides, T. & G. Annual, glabrous; stems 4-15' 

 high, corymbosely branching ; leaves oblong-lanceolate ; runcinately pinnati- 

 fid ; the lobes ovate-lanceolate, acute, toothed or nearly entire ; heads large, 

 (9-14" wide,) terminal on the branches; involucre bell-shaped, with a few 

 outer calyculate scales, but mostly of lanceolate acuminate white-margined 

 subequal entire scales, 4-6" long ; achenia many-striate, smooth ; outer 



> MALACOTHEIX, DC. Heads many-flo-wered ; the flowers aU ligulate. Involucre hemispherical 

 or bell-shaped, of numerous narrow imbricated scales. Eeceptacle naked. Achenia oblong-linear, not 

 beaked, smooth, 8-15-striate or ridged. Pappus double ; the outer a minute cup-like crenulate or toothed 

 ring, a few of the teeth sometimes produced into awn-like somewhat persistent setae ; the inner composed 

 of many silvery-white capillary minutely-serrulate or barbellate deciduous bristles. — Herbs, annual or 

 perennial, natives of Western North America. Leaves undivided or pinnatifld. Flowers yellow or white 



26 



