Dog Valley ivesia

Stems decumbent to ascending. Flowers (10–)20–120, fewer than 10 per glomerule, 8–12 mm diam.; hypanthium (3–)3.5–5 mm diam.; petals narrowly to broadly obovate, usually 4–7 mm, ± equal to sepals; filaments 2–4 mm; styles 3–4 mm.

Flowering summer. Dry meadows, edges of seeps, slopes, and flats, on vernally saturated volcanic soil, in sagebrush and grass communities, conifer woodlands; of conservation concern; 1600–2000 m; Calif., Nev.

Variety canina is known only from the Dog Valley area, Sierra County, California, and adjacent Washoe County, Nevada.