378 Compositaceae 
GUTIERREZIA BROWN-WEED 
Herbs or shrubs, perennial, erect, branching, nearly glabrous, resinous. Leaves 
alternate, linear to lanceolate, entire. Heads radiate, small, in cymes or panicles; in- 
volucre ovoid or campanulate, bracts coriaceous, imbricated in a few series; receptacle flat 
or convex or conic, usually pitted. Ray-flowers 1—10 (ours), pistillate: corolla yellow. 
Disk-flowers 1—10 (ours), yellow, perfect or some staminate: corolla yellow, 5-lobed. 
Anthers not tailed at base. Akenes terete or ribbed or 5-angled. Pappus of 4—14 
scales. (Honor of the Gutierrez family of the Spanish nobility.) 
A. Leaves narrowly linear; rays |—2; disk-flowers 1—2. E. 
G. microcephala Gray 
AA. Lower leaves often wider, the upper linear; rays 310; disk-flowers 310. E. 
(G. diversifolia.) G. sarothrae B. & R. 
CHRYSOPSIS GOLDEN ASTER 
Herbs, perennial, branching. Leaves alternate, sessile, entire or dentate. Heads 
radiate or rayless, medium or large, many-flowered, in loose corymbs, or solitary at the 
ends of the branches; involucre hemispheric or campanulate; bracts narrow, imbricated 
in several series, the outer shorter; receptacle flat, somewhat pitted. Ray-flowers none 
or pistillate: corolla yellow. Disk-flowers mostly perfect: corolla yellow, 5-toothed. 
Pappus in 2 whorls, the inner of many rough capillary bristles, the outer of small or 
minute scales or bristles. Akenes flattish, obovate or oblong, linear. (Gk. chrysos—= 
gold, opsis—like; referring to its golden-yellow flowers. ) 
A. Heads radiate. 
B. Leaves canescent. W.E. C. villosa Nutt. (Hairy Golden Aster) 
BB. Leaves green. E. C. hispida Nutt. (Rough Golden Aster) 
AA. Heads rayless) W.E. (Ammodia oregana.) 
C. oregana Gray (Rayless Golden Aster) 
SOLIDAGO GOLDEN-ROD 
Herbs but sometimes woody at base, perennial, erect. Leaves alternate, simple, 
entire to serrate, often 3-veined from near base. Heads radiate, small, few- to several- 
flowered, in clusters; clusters terminal, various in form; involucre oblong or narrowly 
campanulate; bracts imbricated in several series, the outer shorter; receptacle flat or 
slightly convex, honey-comb-like or fringed or pilose. Ray-flower pistillate, yellow. 
Disk-flowers mostly all perfect; corolla yellow, 5-lobed. Akenes terete or angled, usually 
5—10-ribbed, often hairy. Pappus of capillary bristles; bristles many, rough, nearly 
equal, in |—2 series. (L. solidare—=to make whole; on account of the reputed vul- 
nerary properties. ) 
A. Rays fewer than the disk-flowers; receptacle somewhat honey-combed; inflorescence 
not flat-topped. 
B. Branches of the panicle raceme-like. 
C. Plant glabrous or nearly so below the inflorescence; leaves much serrate to 
entire, acute or acuminate; heads 4—-7 mm. long. 
D. Involucre-bracts linear-subulate; leaves sparingly serrate, thin; heads 4-5 
mm. high. 
E. Bracts of the panicle leaf-like. C. E. 
S. cauring Pip. 
EE. Bracts of the panicle not leaf-like. W. C. E. 
S. elongata Nutt. 

