452 



COMPOSITAE. 



[Vol. III. 



2. Gaillardia aristata Pursh. Great- 

 flowered Gaillardia. (Fig. 3976.) 



Gaillardia arislala Pursh, Fl. Am. Sept. 573. 1814. 

 Perennial; stem simple, or little branched, 

 hirsute, or densely pubescent with jointed 

 hairs, i°-3° high. Leaves firm, densely and 

 finely pubescent, the lower and basal ones peti- 

 oled, oblong or spatulate, laciniate, pinnatifid or 

 entire, mostly obtuse, 2'-5' long; upper leaves 

 sessile, lanceolate, or oblong, or slightly spat- 

 ulate, smaller, entire or dentate, rarely pin- 

 natifid; heads J'/i'-4' broad, long-peduncled; 

 bracts of the involucre lanceolate, acuminate, 

 hirsute; rays lo-lS, yellow; style-tips with fili- 

 form appendages; fimbrillae of the receptacle 

 mostly longer than the achenes, which are 

 villous at least at the base. 



On plains and prairies, Minnesota to the North- 

 west Territorj- and British Columbia, south to 

 Colorado and New Jlexico. Leaves sometimes 

 all basal. >Iay-Sept. 



3. Gaillardia pulchella Foug. 

 Showy Gaillardia. (Fig. 3977.) 



Gaillardia pulchella Foug. Mem. Acad. Sci. 



Paris, 1786; 5. 1786. 



Annual; diffusely branched at the base, the 

 branches ascending, 6'-l5' high, or larger in 

 cultivation, more or less hirsute or pubescent 

 with jointed hairs. Leaves lanceolate, ob- 

 long, or the lower spatulate, l'-^' long, en- 

 tire, dentate or sinuate-pinnatifid, all but the 

 lowest sessile; heads i'-3' broad, long-pe- 

 duncled, bracts of the involucre lanceolate, 

 acuminate, hirsute or pubescent; rays 10-20, 

 red or purple at the base, yellow toward the 

 apex; style-tips with filiform hispid appen- 

 dages; fimbrillae of the receptacle equalling 

 ■or scarcely longer than the achenes, which 

 are more or less villous, or glabrous. 



In dry soil, Nebraska and Missouri to Louisi- 

 ana, Mexico and .\rizona. May-Sept. 



4. Gaillardia suavis (A. Gray) Britt. & 

 Rusby. Rayless Gaillardia. (Fig. 3978.) 



Agassi=ia suavis A. Gray, Proc. Am. Acad, i: 49. 1846. 

 Gaillardia simplex Scheele, Linnaea, 22; 160. 1849. 

 Gaillardia suavis Britt. & Rusby, Trans. N. Y. Acad. 

 Sci. 7:11. 18S7. 



Annual or biennial. Leaves in a basal tuft, or a 

 few near the base of the slender pubescent scape, 

 spatulate or obovate in outline, 2'-6' long, pinnati- 

 fid, dentate, or some of them entire; scape l''-2° 

 high, monocephalous; head about i' broad with 

 the odor of heliotrope, globose in fruit; rays none, 

 or short and pistillate, or a few of them longer and 

 neutral; bracts of the involucre oblong or lanceo- 

 late, sparingly pubescent; fimbrillae of the recep- 

 tacle obsolete; style-appendages short, naked; 

 achenes densely villous; pappus-scales broad, their 

 awns very slender. 



In dry rocky soil, Kansas to Texas. April-June. 



