Part 2, 1915] CARDUACEAE : HELENIEAE 139 



21. Gaillardia Mearnsii Rydb. Bull. Torrey Club 37: 443. 1910. 



A caulescent annual; stems 1-3 dm. high, branched at and leafy towards the base, finely 

 pubescent; basal leaves oblanceolate or spatulate, petioled, 5-10 cm. long, puberulent, entire 

 or round-lobed; upper leaves similar or sometimes pinnatifid with round divisions; peduncles 

 1-2 dm. high, strigose; involucral bracts lanceolate, acute or acuminate, 8-10 mm. long, 

 canescent-puberulent and sparingly villous; fimbrillae of the receptacle subulate, scarcely as long 

 as the achenes; ray-flowers neutral; ligules yellow, 12-15 mm. long, 8-10 mm. wide, deeply 

 2- or 3-cleft; disk 15-20 mm. broad; corollas 6-7 mm. long, yellow at the base, purple above; 

 tube very short; throat cylindro-funnelform, puberulent ; lobes short, rounded-ovate, fimbrillate 

 with moniliform hairs; achenes densely villous-hirsute; squamellae about 10, lanceolate, gradu- 

 ally attenuate into a slender awn equaling the corolla. 



Type locality: Fort Verde, Arizona. 

 Distribution: Arizona and Utah. 



22. Gaillardia flava Rydberg, sp. nov. 



A yellowish-green perennial, somewhat woody at the base; stem leafy, sparingly hirsutu- 

 lous, much branched, about 3 dm. high, yellowish or in age straw-colored ; leaves obovate in 

 outline, 3-5 cm. long, pinnately parted with divergent oblong or lanceolate, often few-toothed 

 divisions, hirsutulous and conspicuously punctate; peduncles 5-10 cm. long; involucral bracts 

 about 1 cm. long, lanceolate, long-acuminate, hirsutulous; ray-flowers neutral; ligules 

 pale-yellow, glandular-granuliferous, about 8 mm. long and 5 mm. wide, cuneate, deeply 

 3-cleft; disk light-yellow, 15-18 mm. broad; corollas 7 mm. long, puberulent; tube about 1 

 mm. long; throat narrowly cylindro-campanulate; lobes ovate, glandular-hirsute; achenes 2 

 mm. long, densely hirsute; squamellae 5-6 mm. long, lanceolate, the midrib produced into 

 an awn between the lobes of the 2-cleft apex. 



Type collected at the Lower Crossing [of the Colorado River], Utah, July 2, 1898, M. E. Jones 

 6412 (U. S. Nat. Herb.). 



23. Gaillardia crinita Rydberg, sp. nov. 



A scapose annual; leaves basal, crowded, 5-10 cm. long, long-villous with flat hairs, deeply 

 pinnatifid with oblong or lanceolate divisions; scape 1-2 dm. high, puberulent and sparingly 

 long-villous; involucral bracts linear or linear-lanceolate, attenuate, long-villous; fimbrillae 

 of the receptacle subulate; ray-flowers neutral; ligules yellow, 15-20 mm. long, 8 mm. wide; 

 disk 15-20 mm. broad, yellow; corollas 5-6 mm. long; tube very short; throat cylindro-funnel- 

 form; lobes triangular, glandular-hispid; achenes densely villous-hirsute; squamellae elliptic, 

 4 mm. long with a short awn-point or muticous. 



Type collected on the Range Reserve plats, Tucson, Arizona, March 4, 1901, David Griffiths 

 2386 (herb. N. Y. Bot. Gard.). 



Distribution: Southern Arizona. 



24. Gaillardia Pringlei Rydberg, sp. nov. 



A scapose or subscapose annual; leaves clustered at the base, 4-6 cm. long, usually pin- 

 nately lobed or sometimes merely toothed, with ovate lobes or teeth, villous with flat hairs; 

 scape 1-2 dm. high, short-pubescent; involucral bracts 8 mm. long, linear-lanceolate, villous 

 with long flat hairs; fimbrillae of the receptacle subulate, about as long as the achenes; ray- 

 flowers neutral; ligules yellow, 10-15 mm. long, about 5 mm. wide, deeply 3-lobed; disk yellow, 

 15-18 mm. broad, hemispheric; corollas 4-5 mm. long; tube glabrous, less than 1 mm. long; 

 throat puberulent; lobes triangular, glandular-hispid; achenes 4 mm. long, densely hirsute; 

 squamellae 8-10, obovate, rounded or slightly refuse at the apex; midrib prominent and 

 excurrent into a short awn. 



Type collected on mesa near Tucson, Arizona, in April, 1S84, C. G. Pringle (herb. Columbia 

 Univ.). 



Distribution: Arizona and southern Utah. 



