Leaf blades lanceolate to elliptic or oblong, (0.6–)1–3.5(–4) × 0.5–1.5 cm. Scapes (0.6–)1–4(–5) dm, glabrous or, rarely, slightly floccose. Involucres turbinate, 3–5.5(–6) × (1.5–)2.5–3(–4) mm, sparsely floccose or glabrous. Flowers 1.5–3 mm; perianth glabrous. Achenes 1.5–3 mm.

Phenology: Flowering May–Jun.
Habitat: Volcanic, diatomaceous or gumbo flats, washes, and slopes, saltbush and sagebrush communities, juniper woodlands
Elevation: 600-1800 m

Distribution

• Generated Map
• Legacy Map

Idaho, Nev., Oreg.

Discussion

Variety calcareum is known from southern Baker and Malheur counties, Oregon, and from Elmore, Owyhee, Payette, Twin Falls, and southern Washington counties, Idaho. It is considered “sensitive” in Idaho.

Selected References

None.

Lower Taxa

None.