COMPOSITE. (composite FAMILY.) 267 



somewhat glandular, emitting a strong or camphoric odor, the heads cymosely 

 clustered. Flowers purplish, in summer. (Dedicated to the Abbe' Plucke.) 



1. P. bifrons, DC. Perennial, 2-3° high; leaves close!// sessile or half - 

 daspintj, oblong to lanceolate, sharply denticulate, veiny (only 2 -3' long) ; 

 heads clustered in a corymb; scales lanceolate. — Low ground, Cape May, 

 N. J., and southward. 



2. P. camphorata, DC. (Salt-marsh Fleabaxe.) Annual, pale 

 (2-5° high); leaves scarcel// petioled, oblong-ovate or lanceolate, thickish, 

 obscurely veiny, serrate ; corymb flat ; iuvolucral scales ovate to lanceolate. 

 (P. foetida, DC.) — Salt marshes, Mass. to Va., and southward, and on river- 

 banks westward to Ky., 111., and Xeb. (?) 



29. EVAX, Gaertn. 



Heads rather many-flowered, discoid ; flowers as in Pluchea, tlie central usu- 

 ally sterile. Involucral scales few, woolly. Receptacle convex to .'■ubulate, 

 chaffy, the scarious chaff not embracing the smooth dorsally comjjressed 

 achenes. Anthers with tails or acutely sagittate ; pappus none. — Low, densely 

 floccose-woolly annuals; extreme western. (Name of uncertain significatioi].) 



L E. prolifera, Xutt. A spau high or less, simple or branching from 

 base ; leaves numerous, small and spatulate ; heads in dense proliferous clus- 

 ters; receptacle convex; chaff subtending sterile flowers woolly-tipped, the 

 rest more scarious and naked, oval or oblong. — Dakotas and W. Kan. to Tex 



30. FILAGO, Tourn. Cottox-Rose. 



Heads and flowers as in Evax. Receptacle elongated or top-shaped, naked 

 at the summit, but chaffy at the margins or toward the base ; the chaff resem- 

 bling the proper involucral scales, each covering a single pistillate flower. 

 Achenes terete ; pappus of the central flowers capillary, of the outer ones 

 mostly none. — Annual, low, brandling woolly herbs, with entire leaves, and 

 small heads in capitate clusters. (Name from Jiliiin, a thread, in allusion to 

 the cottony hairs of these plants.) 



F. Germaxica, L. (Herha Impia.) Stem erect, short, clothed with 

 lanceolate and upriglit crowded leaves, producing a capitate cluster of woolly 

 heads, from which rise one or more branches, each terminated by a similar 

 head, and so on ; — hence the common name applied to it by the old botanists, 

 as if the offspring were undutifullv exalting themselves above the parent. — 

 Dry fields, N. Y. to Va. July - Oct. (Nat. from Eu.) 



31. ANTENNARIA, Gaertn. Everlasting. 



Heads many-flowered, dioecious ; flowers all tubular; pistillate corollas very 

 slender. Involucre dry and scarious, white or colored, imliricated. Recep- 

 tacle convex oi flat, not chaffy. Anthers caudate. Achenes terete or flattish ; 

 pappus a single row of bristles, in the fertile flowers capillary, united at base 

 so as to fall in a ring, and in the sterile thickened and club-shaped or barbel- 

 late at the summit. — Perennial white-woolly herbs, with entire leaves and 

 corymbed (rarely single) heads. Corolla yellowish. (Name from the resem- 

 blance of the sterile pap])us to the untenme of certain insects.) 



1 A. plantaginifolia, Hook. (Plantain-leaved Everlasting.) 

 Spreading by offsets and runners, low (3-18' high) ; leaves silky-woolly when 

 young, at length green above and hoary beneath; those of the simple and scape 



