COMPOSITiE. 459 



1. C. Xardosmia, Gray, Proc. Am. Acad. xix. 50 (1883); 1. c. vii. 361 

 (1868), under Cacalia, and 1. c. viii. 631 (1873), under Adenoslyles. 

 Robust, 1 ft. high or more: leaves mostly radical or at the base of the 

 stem: heads 1 in. high, peduncled, corymbosely or racemosely arranged 

 near and at the summit of the stem: flowers honey-yellow, sweet-scented. 

 — Mountain summits of northern Napa, or adjacent Sonoma Co., thence 

 northward to Oregon, in the Coast Range. June. 



97. PSATHYROTES, Gray. Low diffusely branched and rather 

 rigid desert annuals, with herbage of heavy or balsamic odor, broad 

 leaves and scattered heads of yellowish flowers. Involucre campanulate, 

 of 1 or 2 series of subequal bracts. Receptacle flat or convex, naked. 

 Flowers ail tubular and perfect ; the corolla-tube short, 5-toothed. 

 Anthers minutely sagittate-auricled. Achenes turbinate or oblong, vil- 

 lous or hirsute. Pappus of copious unequal rigid capillary bristles 

 usually brownish. 



1. P. aiiima, Gray, PI. Wright, ii. 100 (1853); Nutt. PI. Gamb. 179 

 (1848), under Bulhuslylis. Scurfy-cinereous; the small ovate dentate 

 leaves short- petiolate, seldom cordate, sometimes broader than long: 

 achenes obloug-turbinate, densely villous. — Low desert plains on the 

 eastern borders of the State. 



98. CROCIUIUM, //ooA;e;-. Small winter annual, floccose-tomentose 

 when young, with numerous slender scape-like stems from a tuft of 

 small leaves. Heads solitary, terminal on all the branches. Involucre 

 hemispherical, of 9—12 nearly equal oblong-lanceolate thin bracts and 

 no subtending bractlets. Rays about 12, oval or oblong. Disk-corollas 

 with slender tube and campauulate throat; the 5 lobes spreading. 

 Receptacle convex, tiaberculate. Achenes fusiform oblong, obscurely 

 3 — 5-co8tate, beset with hyaline oblong papillae, these when wetted 

 throwing out a pair of spiral threads. Pappus a single series of white 

 barbellate deciduous bristles, in the ray commonly wanting. 



1. C. multicaule, Hook. Fl. i. 335, t. 118 (1833). Proper and sub- 

 radical leaves obovate ot spatulate, % in. long, few-toothed; those of the 

 vscape-like stems bract-like and linear or lanceolate: heads small but 

 showy, the flowers yellow. — Elevated plains and low foothills from about 

 Mt. Shasta, southward to Mariposa Co. April. 



99. LEPIDOSPARTUM, Gray. A rigid green but scaly-bracted and 

 almost leafless shrub, branching somewhat fastigiately and bearing the 

 heads of pale yellow flowers somewhat corymbosely or racemosely. 

 Involucre 10 — 15-flowered, its longer inner bracts 8—12, in 2 or more 



