268 COMPOSITE. (COMPOSITE FAMILY.) 



9. A. frigida, Willd. Low (6' -20' high), in tufts, slightly woody at the 

 base, white-silky ; leave? pinnately parted and 3 - 5-cleft, the divisions narrow- 

 linear ; heads globose, racemose. Dry hills and rocks, Falls of St. Anthony, 

 Wisconsin (L. Lesquereux, T. J. Hale], Lake Superior, and northwestward. 



68. GNAPHAIiIUM, L. CUDWEED. 



Heads many-flowered ; the flowers all tubular ; the outer pistillate and very 

 slender, the central perfect. Scales of the involucre dry and scarious, white or 

 colored, imbricated in several rows. Receptacle flat, naked. Pappus a single 

 row of capillary rough bristles. Woolly herbs, with sessile or decurrent leaves, 

 and clustered or corymbed heads ; fl. in summer and autumn. Corolla whitish 

 or yellowish. (Name from yvd(f>a\ov, a lock of wool, in allusion to the floccose 

 down of the leaves.) 

 1. Achenia terete: pistillate flowers in several rows : bristles of pappus distinct. 



1. G. deciirrens, Ives. (EVERLASTING.) Stout, erect (2 high) peren- 

 nial, branched at the top, clammy-pubescent, white-woolly on the branches, 

 bearing numerous heads in dense corymbed clusters ; leaves linear-lanceolate, partly 

 clasping, decurrent; scales of the (yellowish-white) involucre oval, acutish. 

 Hillsides, New Jersey and Penn. to Maine, Michigan, and northward. 



2. G. polycephalum, Michx. (COMMON EVERLASTING.) Erect, woolly 

 annual (l'-2' high), fragrant; leaves lanceolate, tapering at the base, with undu- 

 late margins, not decurrtnt, smoothish above ; heads clustered at the summit of the 

 panicled-corymbose branches, ovate-conical before expansion, then obovate ; scales 

 of the (whitish) involucre ovate and oblong, rather obtuse; perfect flowers 

 few. Old fields and woods : common. 



3. G. uligindsum, L. (Low CUDWEED.) Diffusely branched, woolly 

 annual (3' -6' high); leaves lanceolate or linear, not decurrent; heads (small) 

 in terminal sessile capitate clusters subtended by leaves. Low grounds by the 

 roadside; common eastward and northward : perhaps introduced. (Eu.) 



2. GAMOCH^ETA, Weddell. Achenia and flowers as 1 : bristles of the 

 pappus united at the very base into a ring, so falling off all together. 



4. G. purptireum, L. (PURPLISH CUDWEED.) Annual, simple or 

 branched from the base, ascending (6' -20' high), woolly ; leaves oblong-spatu- 

 late, mostly obtuse, not decurrent, green above, very white with close wool un- 

 derneath ; heads in sessile clusters in the axils of the upper leaves, and spiked at the 

 wand-like summit of the stem : scales of the involucre tawny, the inner often 

 marked with purple. Sandy or gravelly soil, coast of Maine to Virginia, and 

 southward. 



3. HOMALOTHECA, DC. Achenia flattened: pistillate flowers in a single 

 marginal row : bristles of the pappus distinct and falling separately, as in 1 . 



5. G. supinum, Villars. (MOUNTAIN CUDWEED.) Dwarf and tufted 

 perennial (2' high) ; leaves linear, woolly ; heads solitary or few and spiked on 

 the slender simple flowering stems ; scales of the involucre brown, lanceolate, 

 acute. Alpine summit of Mount Washington, New Hampshire : very rare. 

 (Eu.) 



