798 COMPOSITAB (composite family) 



subtending axillary fascicles ; rameal leaves smaller, usually without axillary 

 fascicles; heads mostly in glomerules, a few pediceled, the pedicels smooth or 

 scabrous ; involucre campanulate, 3-4 mm. long, 2-3 mm. thick, its firm oblong 

 glutinous bracts blunt. {Euthamia Greene ; E. caroliniana Am. auth., in part, 

 not Greene.) — Sandy or gravelly soil, chiefly near the coast, e. Mass. to Fla.; 

 also n. Ind. to s. Wise. Aug.-Oct. 



54. S. Moseldyi Fernald. Similar, 5-6 dm. high ; leaves lance-linear, taper- 

 pointed, without axillary fascicles ; heads mostly on scabrous pedicels subtended 

 by very minute subulate bracts; involucre subcylindric, 3-4 mm. long, 1.5-2 

 mm. thick, its very unequal soft bracts linear. — Oxford Prairie, Erie Co., O. 

 {Moseley). Sept. 



++ *+ Involucre 5-6 mm. long. 



55. S. leptoc^phala T. & G. Stem strict and simple nearly to the summit, 

 3-6 dm. high ; leaves linear-lanceolate, firm, light green, strongly 1-ribbed, 

 with or without obscure lateral nerves, somewhat punctate but not viscid, the 

 middle ones 4-6 cm. long, 4-6 mm. wide ; heads sessile or short-pediceled ; 

 involucre oylindrio-clavate, its linear pale straw-colored bracts barely viscid. 

 (Eiithamia Greene. ) — Damp sandy ground, e. Neb. to Miss, and Tex. Aug.-Oct. 



56. S. gymnospermoides (Greene) Fernald. Similar, freely fastigiate- 

 branched from near the middle; leaves linear-attenuate, 1-ribbed, strongly 

 punctate, glutinous; the middle ones 5-7 cm. long, 2-3 mm. wide; involucre 

 very viscid. {Euthamia Greene. ) — Dry soil, e. Kan . to La. and Tex. Aug.-Oct. 



16. BRACHYCHAfeTA T. & G. False Golden-rod 



Habit and flowers nearly as in Solidago, except as to the pappus, which is a 

 row of minute rather scale-like bristles, shorter than the achene. — A perennial 

 herb, with rounded or ovate serrate leaves, all the lower ones heart-shaped ; the 

 small yellow heads in sessile chisters racemed or spiked on the branches. 

 (Name composed of Ppaxis, short, and x"'''"'?! bristle, from the pappus.) 



1. B. sphacelita (Raf.) Britton. Slender, about 1 m. high. (B. cordata 

 T. & G.) — Wooded hills, s. Ind. to Va. and Ga. Aug.-Oct. 



17. APLOpApPUS Cass. 



Heads many-flowered, radiate ; rays many, pistillate. Involucre heml- 

 spherical, of many closely imbricated bracts in several series. Receptacle 

 flat. Achenes short, turbinate to linear ; pappus simple, of numerous unequal 

 bristles. — Mostly herbaceous perennials, with alternate rigid leaves. Ray- and 

 disk-flowers both yellow. (From d7rX6os, simple, and Tniirxos, pappus.) 



1. A. cilijltus (Nutt.) DC. Annual or biennial, glabrous, 0.5-1.6 m. high, 

 leafy ; leaves oval (or the lower obov.ate), obtuse, dentate with bristle-pointed 

 teeth ; heads very large, few and clustered, the outer bracts spreading ; achenes 

 glabrous, the central abortive. (Prionopsis Nutt.) — Mo., Kan., and south w. 



2. A. spinulbsus (Pursh) DC. Perennial, branching, puberulent or glabrate, 

 low ; leaves narrow, pinnately or bipinnately parted, the lobes and teeth bristle- 

 tipped ; heads .small, the appressed bracts bristle-tipped ; achenes pubescent. 

 {Sideranthus Sweet ; Eriocarpum Greene.) — Minn, and la. to the Saskatchewan 

 and Tex. 



18. BIGEL6WIA DC. Ratless Golden-rod 



Heads 3-4-flowered ; flowers all tubular and perfect. Involucre club-shaped, 

 yellowish; the rigid somewhat glutinous bracts linear, closely imbricated and 

 appresaed. Receptacle narrow, with an awl-shaped prolongation in the center. 



Aclienes somewhat obconical, hairy ; pappus a single row of capillary bristles. 



Flowers yellow. Leaves scattered, oblanoeolate or linear, 1-3-nerved. A lar^e 

 chiefly western genus, few species approaching our limits. (Dedicated to Dr. 

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

 Medical Botany.) Chondkophora Raf. Bigej-ovia T. & G. 



