Everlasting Tribe 409 



24. FILAGO L. 



Erect slender floccose-woolly annuals with alternate 

 entire leaves and small discoid heads in capitate lateral 

 and terminal clusters. Bracts of the involucre few and 

 scarious. Receptacle convex or subconic, chaffy, each 

 chaff-scale subtending an achene. Outer flowers of the 

 heads in several series, pistillate, their corollas filiform, 

 minutely 2-4-dentate. Central flowers few, perfect, but 

 mainly sterile, their corollas tubular, 4-5-toothed. 

 Achenes terete or slightly compressed. 



1. F. Californica Nutt. Slender, erect, annual, 2 dm. high 

 or usually less ; leaves linear or the lowest spatulate; heads ovate, 

 slightly angular; pistillate flowers 8-10-bracteate, their bracts 

 broadly ovate and deeply boat-shaped, somewhat arcuate-incurved, 

 very woolly, with broadish and obtuse hyaline tips; inner bracts 

 oblong, concave, nearly glabrous; achenes narrowly oblong, 

 minutely papillose-granular; pappus of the embraced none; of 

 the others copious. 



Frequent on dry hillsides and plains, especially in sandy soil. April- 

 June. 



25. GNAPHAL.IUM L. EVERLASTING. 



Woolly erect or diffusely branched annual, biennial 

 or perennial herbs with alternate leaves and discoid 

 heads of pistillate and perfect flowers. Involucral 

 bracts scarious, white or yellowish, imbricated. Recep- 

 tacle flat, naked. Pistillate flowers in several series, 

 their corollas filiform, minutely dentate or 3-4-lobed. 

 Central flowers perfect, their corollas tubular, 5-toothed 

 or 5-lobed. Achenes not ribbed. Pappus a single series 

 of scabrous capillary bristles, sometimes thickened above. 



* Pappus-bristles not united at base. 



*- More or less glandular-pubescent and heavy-scented. 



1. G. ramosissimum Nutt. Biennial, erect, 6-15 dm. high, 

 paniculately much branched above the middle ; the panicle often 



