552 



COMPOSITES. 



into an elongated or sometimes broad panicle; herbage very bright 

 white woolly, especially when young, the wool persistent; panicle 

 often 1 ft. long; heads small, narrow, 2 lines long, disposed in rather 

 small glomerules or clusters at the ends of the branches of the 

 panicle; bracts of the involucre ovate or oblong and obtuse at apex, 

 or the very innermost linear, bright white. 



Wooded mountain slopes: Coast Ranges^ Sierra Nevada. Aug.- 

 Sept. 



6. G. Chilense Spreng. Cotton-batting Plant. Annual or 

 biennial; stems several, erect from a decumbent base (or single and 

 wholly erect), stout, J to 2£ ft. high, often densely clothed with 

 leaves; leaves narrowly spatulate (2 to 6 lines broad) or the upper- 

 most linear or lanceolate, the short decurrent bases rather broad and 

 somewhat auricle-like; heads 3 lines wide and high, numerous in a 

 large close glomerule terminating the main stem, or in several 

 glomerules at the ends of the branches of the more or less open 

 panicle; involucres with a greenish-yellowish tinge. — (G. Sprengelii 

 H. & A.) 



Open ground in valleys or on low hills: San Francisco; Monterey 

 and southward to Southern California. 



73. ANAPHALIS DC. Everlasting. 



Perennial herbs with simple erect equably leafy stems. Leaves- 

 green above, closely woolly beneath. Heads disposed in a com- 

 pound corymb. Bracts of the involucre numerous, pearly white and 

 scarious, imbricated in several series, radiating in age. Flowers 

 yellow, dioecious: — staminate flowers with slender corolla and undi- 

 vided style; pistillate flowers with a tubular 5-toothed corolla and 

 2-cleft style. Pappus as in Gnaphalium. (Ancient Greek name of 

 some "Everlasting.") 



1. A. margaritacea (L.) B. & H. Pearly Everlasting. Stems 

 several from the base, 1 to 2 ft. high; leaves broadly to narrowly 

 lanceolate, sessile, with revolute margin, 3 to Sin. long; corymb 1.] 

 to 6 in. broad. 



Fields and open woods: Coast Ranges (Monterey. Mt. Tamalpais 

 and northward); Sierra Nevada. July-Sept. Var. occidentals 

 Greene. Leaves sessile by a broad auriculate-clasping base. — Oakland 

 Hills; San Francisco, etc. 



74. PLUCHEA Cass. 

 Leafy herbs with a strong odor of camphor. Heads numerous, 

 clustered in corymb-like cymes, consisting of many purplish disk- 

 flowers and no ray-flowers. Marginal flowers of the head pistillate 

 and perfect, with tubular-filiform truncate corollas; central flowers 

 few, perfect, but sterile, with tubular 5-cleft corollas. Involucre 

 imbricated. Receptacle flat, naked. Achenes grooved. Pappus a 

 single series of capillary bristles. (Named for the Abbe N. A. Pluche, 

 amateur naturalist, of Paris.) 



