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Key to Gaillardia
Asteraceae
Gaillardia
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40570
3 Disk flowers brown, reddish brown, or yellow.
4 Disk flowers brown or reddish brown; ray flowers present or absent, when present usually largely red, orange, or purplish
6 Midstem leaves with narrowly truncate to obtuse or cuneate bases; foliage sparsely to moderately hispidulous; [widespread]
6 Midstem leaves with subclasping to clasping bases; foliage moderately to densely hispidulous; [c. and s. TX to ne. Mexico]
7 Setae of the receptacle (2-) 3-6+ mm long; perennial, with leaves basal and cauline at time of flowering
7 Setae of the receptacle 1.5-3 mm long; annual or perennial, with leaves all or mostly cauline at time of flowering
8 Ray flowers typically unicolored, red to maroon; disc corolla lobes 0.5-1 mm long, ovate-deltate to lanceolate; cypselae dimorphic (outer cypselae longer than the inner, outer cypselae with shorter pappus scales than the inner
8 Ray flowers typically bicolored, proximally brown-purple to red, distally yellow-orange; disc corolla lobes 1-4 mm long, deltate to ovate; cypselae and pappus scales all similar.
9 Leaves fleshy; perennial or annual, strongly branching, the secondary branches spreading and therefore forming compact, rounded “bushes”; [widespread, primarily of coastal dunes and flats, NC south to FL, west to TX]