COMPOSITE. (composite FAMILY.) 239 



31. ANTENNARIA, Gajrt. Everlasting. 



Heads mauy-flowered, dioecious, discoid ; the corolla of the sterile flowers 

 5-clet't; of the pistillate filiform. Scales of the iuvolucre scarious, colored. 

 Receptacle convex or flat. Achenia nearly terete. Pappus a single row of 

 capillary bristles, which, in the stamiuate flowers, are thickened at the ajiex. 

 — Perennial downy or woolly herbs, with alternate entire lea\'es, and corym- 

 bose rarely single heads. 



1. A. margaritacea, R.Br. Stem corymbose above, woolly; leaves 

 liuear-lauceolace, with revolute margins, tomentose ; heads corymbose ; iuvo- 

 lucre white. — Upper districts of North Carolina, and northward. Sept. - 

 Oct. — Stem 1°- 2° high. 



2. A. plantaginifolia. Hook. Stolouiferous ; stems scape like ; radical 

 leaves spatulate or obovate, hoary, becoming smooth above, 3-ribbed; those of 

 the stem few, linear or lanceolate ; heads small, in a terminal cluster, some- 

 times single and larger ; involucre white or purplish. — Sterile soil, Florida, 

 and northward. March- May. — Stem 6'- 12' high. 



32. GNAPHALIUM, L. Everlasting. 



Heads many-flowered, discoid ; exterior and pistillate flowers very slender, 

 mostly in several rows ; the central perfect. Scales of the involucre appressed, 

 scarious. Receptacle flat, naked. Achenia terete or more or less flattened. 

 Pappus a single row of capillary bristles. — Woolly or downy herbs. Lea^■es 

 alternate. Heads in crowded spikes or corymbs. Involucre colored. 



1. G. polyeephalum, Michx. Stem woolly or villous, sometimes 

 viscid, white, branching above ; leaves linear, sessile, undulate, white beneath ; 

 heads corymbose ; scales of the involucre white, obtuse. — Old fields and open 

 woods, common. Sept. - Oct. (T) — Stem 2° high. Perfect flowers few. 



2. G. purpureum, L. Woolly or tomentose and hoary throughout; 

 stems liranching at the base, ascending, simple ; lowe.st leaves spatulate- 

 lanceolate, the upper linear; heads in crowded spikes. — Cultivated ground, 

 very common. April- June. (T) — Stems 4'- 12' high. 



33. PILAGO, L. Cudweed. 



Heads discoid, many-flowered ; the central flowers perfect, but often abor- 

 tive, the outer ones very -slender and pistillate. Involucre of few woolly 

 scales. Lower part of the long or top-shaped receptacle chaffy, the upper 

 part naked. Pappus of the perfect flowers capillary, of the pistillate none. — 

 Low woolly annuals. 



1- F. Germanioa, L. Stem forking; leaves lanceolate, entire; scales 

 of the involucre and chaff cuspidate. — Waste ground. Introduced. 



Tribe IV. SENECIONIDE^. Heads discoid or radiate : branches of the 

 sti/Ie, In the perfect floivers, linear, convex eTternally, halrtf or brush-shaped 

 at the apex, and truncate, or produced Into a conical or hispid appendage ; 

 ike stlgmatlc lines terminating at the appendage, not confluent. 



