composite, (composite: family.) 207 



20. BIGEldVIA, DC. Rayless Goldex-rod. 



Heads 3 - i-flowercd, tho flowers all perfect and tubular : rajs none. Invo- 

 lucre club-shaped, yellowish ; the rigid somewhat glutinous scales linear, closely 

 imbricated and appressed. R ceplacle narrow, with an awl-shaped prolongation 

 in the centre. Achenia somewhat obconical, hairy. Pappus a single row of 

 capillary bristles. — A perennial smooth herb; the slender stem (1°- 2° high) 

 simple or branched from the base, naked above, corymbose at the summit, bear- 

 ing small heads in a flat-topped corymb. Flowers yellow. Leaves scattered, 

 oblanceolate or linear, 1 - 3-nerved. (Dedicated by De Candolle to Dr. Jacob 

 Bigelow, author of the Florula Bostoniensis, and of the American Medical 

 Botany.) 



1. 15. imdata, DC. — Low pine barrens, New Jersey and southward. 

 Sept. 



21. CHE1§6PSIS, Nutt. Golden- Aster. 



Heads many-flowered, radiate ; the rays numerous, pistillate. Scales of the 

 involucre linear, imbricated, without herbaceous tips. Receptacle flat. Achenia 

 obovate or linear oblong, flattened, hairy. Pappus of all the flowers double, 

 the outer a set of very short and somewhat chaffy bristles, the inner of elongated 

 capillary bristles. — Chiefly perennial low herbs, woolly or hairy, with rather 

 large often corymbose heads terminating the branches. Disk and ray-flowers 

 yellow. (Name composed of xP v< *6e, gold, aud ofig, aspect, from tho golden 

 blossoms.) 



* Leaves narrowly lanceolate or linear : achenia linear. 



1. C. graaniaiifolia, Nutt. Silvery-silky, with long close-pressed hairs; 



stem slender, naked above, the few heads closely corymbed ; leaves lanceolate or 

 linear, elongated, grass-Wee, nerved, shining, entire. — Dry sandy soil, Delaware to 

 Virginia, and southward. July -Oct. 



2. C falcata, Ell. Stems (4'-10' high) very woolly; leaves crowded, 

 linear, rigid, about Z-nerved, entire, somewhat recurved or scythe-shaped, hairi/, or 

 smooth when old, sessile ; heads (small) corymbed. — Dry sandy soil on the 

 coast, pine barrens of New Jersey to Nantucket, Massachusetts. Aug. 



-::• * Leaves oblong or lanceolate, entire or slightly serrate, mostly sessile, veined, not 

 nerved ; achenia obovate, flattened. 



3. C Cwoss^pisaa, Nutt. Densely woolly all over; leaves oblong, obtuse, 

 (l'-2' long); heads larger than in the next. — Pine barrens, Virginia aud 

 southward. Aug. - Oct. 



4. C. Mariana, Nutt. Silky with long and weak hairs, or when old 

 smoothish ; leaves oblong ; heads corymbed, on glandular penduncles. — Dry bar- 

 rens, from New York and Lancaster, Penn., southward, near the coast. Aug.- 

 Oct. 



5. C. Villosa, Nutt. Hirsute and villous-pubescent ; stem corymbosely 

 branched, tho branches terminated by single short-peduncled heads'; leaves nar- 

 rowly oblong, hoary with rough pubescence (as also the involucre), bristhj-ciliate 

 toward the base. — Dry plains and prairies, Wisconsin to Kentucky, and west- 

 ward. July - Sept. 



