Annuals, 5–45 cm; vestiture hirsuto-pilose and/or puberulent, stem hairs spreading to deflexed, 0.1–0.3 mm. Phyllary apices acute to short-acuminate. Ray-florets (10–) 25–45. Disc-floret corollas: bases (mature) bulbous-swollen, indurate. Cypselae: hairs apically 1-directionally coiled; pappi usually coroniform, uneven, rarely of acute to awn-tipped scales 0.2–2 mm.

Distribution

• Generated Map
• Legacy Map

Ark., Fla., Kans., La., N.Mex., Okla., Tex., n Mexico

Discussion

Varieties 3 (3 in the flora).

Selected References

None.

Lower Taxa

Aphanostephus skirrhobasis var. kidderi, Aphanostephus skirrhobasis var. skirrhobasis, Aphanostephus skirrhobasis var. thalassius

Key

1	Leaves thickened, densely, almost felty gray-hairy; sand dunes along Gulf Coast	Aphanostephus skirrhobasis var. thalassius
1	Leaves not strongly thickened or felty gray-hairy; sandy soils, interior localities	> 2
2	Pappi of acute or awn-tipped scales or setiform scales 0.4–2 mm	Aphanostephus skirrhobasis var. kidderi
2	Pappi coroniform, uneven, ciliate, 0.1–0.3 mm, rarely of awn-tipped scales	Aphanostephus skirrhobasis var. skirrhobasis