Plants silvery white, 3–9 cm, tightly sericeous. Stems mostly 1–5; branches equal to unequal, distal strictly ascending to erect. Leaves: largest 7–11 × 2–3 mm; capitular leaves erect, involucral, proximally carinate, becoming indurate. Heads borne singly, or 2–3 in largest glomerules. Receptacles narrowly conic, 0.9–1.1 mm, heights mostly 2–2.4 times diams. Pistillate paleae: longest 2.5–3.2 mm.

Phenology: Flowering and fruiting mid Apr–mid Jun.
Habitat: Open, dry, shallow rocky or gravelly soils, usually over limestone or gypsum, sometimes with extra moisture (dry drainages, disturbed places)
Elevation: 500–1500 m

Distribution

• Generated Map
• Legacy Map

N.Mex., Okla., Tex.

Discussion

Variety barnebyi is not particularly weedy. It occurs in southwestern Oklahoma, southeastern New Mexico, and western Texas (nearly to Mexico), largely allopatric with var. prolifera.

Selected References

None.

Lower Taxa

None.