Gaillardia aristata Pursh

Gaillardia hallii Rydberg, sp. nov
A caulescent herb, with a perennial root; stem 2-4 dm. high, finely strigose-hirsute; lower
leaves oblanceolate, petioled, 5-10 cm. long, entire or dentate, rather densely short-pubescent;
upper stem-leaves linear-lanceolate, sessile, entire; peduncles 5-15 cm. long; involucral bracts
canescent-strigose, 12-15 mm. long, lanceolate, rather abruptly acuminate; ray-flowers neutral;
ligules 10-15 mm. long, yellow; disk 1-2 cm. broad; corollas 6-7 mm. long, yellow below,
purplish above; tube 1 mm. long; throat cylindro-campanulate; lobes acuminate, moniliform-
ciliate; achenes 3 mm. long, densely hirsute; squamellae 6 mm. long, broadly lanceolate,
abruptly acuminate into an awn which is longer than the body.
Type collected in Oregon, in 1871, Elihu Hall 279 (herb. N. V. Bot. Gard.). Distribution: Oregon.

Gaillardia aristata Pursh, Fl. Am. Sept. 573. 1814
Yirv.ilia grandi flora Nutt.; Fraser, Cat. 1813. Not Gaillardia grandijlora Van Houtte. 1857.
Gaillardia bicolor Sims, Bot. Mag. pi. 1602. 1813. Not G. bicolor Lam. 1788.
Polatherns scaber Raf. Am. Mo. Mag. 2: 268. 1818.
Gaillardia bicolor aristata Nutt. Gen. 2: 175. 1818.
Gaillardia rustica Cass. Diet. Sci. Nat. 18: 20. 1820.
Gaillardia perennis Loisel. Herb. Gen. Amat. 5: pi. 328. 1821.
Gaillardia lanceolata DC. Prodr. 5: 652, in part. 1836. Not G. lanceolata Michx. 1803.
Gaillardia Roezli Regel, Gartenflora 24: 289. 1875.
Gaillardia aristata foliosa Lunell, Am. Midi. Nat. 2: 122. 1911.
Gaillardia bracteosa Standley, Smiths. Misc. Coll. 56 33 : 2. 1912.
A caulescent herb, with a perennial root; stem mostly simple, striate, 3-6 dm. high, hirsute
with jointed hairs; lower leaves oblanceolate in outline, 5-20 cm. long, more or less hirsute on
both sides, entire or variously toothed or lobed, short-petioled; upper stem-leaves lanceolate
or linear-lanceolate, sessile, entire or lobed or pinnatifid; peduncles 1-2 dm. long; involucral
bracts 1-2 cm. long, more or less villous as well as ciliate with moniliform hairs, lanceolate,
caudate-acuminate; fimbrillae of the receptacle subulate-aristate, more than twice as long
as the achenes; ray-flowers neutral; ligules 1-2.5 cm. long, yellow, or yellow with purple bases;
disk 15-30 mm. broad; corollas yellow below, purple above, 7-9 mm. long; tube about 1 mm.
long, glabrous; throat cylindro-campanulate; lobes acuminate, ciliate with moniliform hairs;
achenes about 4 mm. long, densely hairy throughout; squamellae 6-7 mm. long, lanceolate,
rather abruptly acuminate; awn nearly twice as long as the body.
Type locality: Rocky Mountains [probably Montana].
Distribution: Saskatchewan to Colorado, Oregon, and British Columbia.