140 NORTH AMERICAN FLORA [Volume 34 



25. Gaillardia arizonica A. Gray, Syn. Fl. N. Am. I 2 : 353. 1884. 



Gaillardia peduncidala A. Nelson, Bot. Gaz. 47: 432. 1909. 



A subscapose annual; stems several, 1-2 dm. high, leafy mostly at the base, hirsute-strigose; 

 leaves mostly basal, 4-6 cm. long, pinnately lobed with rounded to oblong crenate divisions, 

 somewhat villous-hirsute; peduncles 5-15 cm. long; involucral bracts linear-lanceolate, 

 acute, villous with flat hairs, 7-8 mm. long; fimbrillae of the receptacle subulate; ray-flowers 

 neutral; ligules yellow, 10-12 mm. long, 4-5 mm. wide, deeply 3-lobed; disk yellow, 15-18 

 mm. broad, hemispheric; corollas 5 mm. long; tube less than 1 mm. long, glabrous; 

 throat cylindro-funnelform, slightly puberulent; lobes triangular, glandular-puberulent;. 

 achenes 3-4 mm. long, densely hirsute; squamellae 8-10, obovate, 2.5 mm. long, rounded or 

 retuse at the apex, without distinct midrib and awn. 



Type locality: Given as "high plains of south Utah and Arizona," but the type was collected 

 at Beaver Dam, Arizona. 



Distribution: Arizona, southern Utah, and Nevada." 



26. Gaillardia multiceps Greene, Bull. Torrey Club 24: 512. 1897. 



A caulescent perennial, with a thick woody caudex; stems several, strict, 2-3 dm. high,, 

 finely puberulent, branched; leaves numerous, petioled, alternate; petioles less than 1 cm. 

 long; blades thick, puberulent, conspicuously punctate, 2-4 cm. long, the lower oblanceolate, 

 the upper almost linear, all entire; peduncles 2-5 cm. long; involucral bracts ovate-lanceo- 

 late, caudate-acuminate, hirsute, chartaceous at the base, with reflexed tips; fimbrillae of 

 the receptacle setaceous, shorter than the achenes; ray-flowers neutral; ligules yellow, 8-10 

 mm. long; disk 15-18 mm. broad; corollas yellow with purplish limb, 5-6 mm. long; tube very 

 short; throat trumpet-shaped; lobes triangular, glandular-hirsute; achenes densely villous- 

 hirsute; squamellae narrowly lanceolate, including the awn 6 mm. long. 



Type locality: South of Woodruff, Arizona. 

 Distribution: Arizona. 



27. Gaillardia spathulata A. Gray, Proc. Am. Acad. 12: 59. 1876. 



A caulescent perennial, with a thick woody caudex; stems 1-2 dm. high, branched, leafy, 

 puberulent; leaves petioled, scattered, alternate; petioles about 1 cm. long or less; blades 

 spatulate, or the upper oblanceolate, 1.5-4 cm. long, puberulent and conspicuously punctate, 

 thick; peduncles 3-5 cm. long; involucral bracts ovate-lanceolate, short-acuminate, hirsute; 

 fimbrillae of the receptacle setaceous, shorter than the achenes; ray-flowers neutral; ligules 

 yellow, 10-12 mm. long, deeply 3-cleft; disk yellow, about 1.5 cm. broad; corollas about 6 

 mm. long; tube very short; throat funnelform; lobes triangular, ovate, pubescent; achenes 

 densely villous all over; squamellae lanceolate, including the awns 6-7 mm. long, surpassing 

 the corollas. 



Type locality: Rabbit Valley, Utah. 

 Distribution: Central Utah. 



28. Gaillardia Parryi Greene, Bull. Torrey Club 24: 512. 1897. 



Gaillardia acaulis A. Gray, Proc. Am. Acad. 10: 73. 1874. Not G. acaulis Pursh. 1814. 



An acaulescent perennial, with a thick woody root and a multicipital caudex; leaves 

 basal, crowded, petioled; petioles 1-3 cm. long; blades obovate or oval, 2-5 cm. long, thick, 

 minutely puberulent and conspicuously punctate; scape 1-3 dm. long, puberulent; heads 

 solitary; involucral bracts lanceolate, acute or acuminate, 6-8 mm. long, short-villous, only 

 the tips reflexed, the bases somewhat chartaceous; fimbrillae of the receptacle subulate, 

 shorter than the achenes; ray-flowers neutral; ligules yellow, 10-15 mm. long, deeply 3-cleft, 

 with lanceolate divisions; disk yellow; corollas 7-8 mm. long, villous; tube minute; throat 

 trumpet-shaped; lobes triangular; achenes densely villous throughout; squamellae about 9,. 

 lanceolate, nearly 1 mm. wide, including the awn-tip 6 mm. long. 



Type locality: Southern Utah. 



Distribution: Southern Utah and northern Arizona. 



