Castilleja rubida, commonly called the purple alpine paintbrush or Wallowa alpine paintbrush, is a species of Indian paintbrush.
Description This is a short perennial species growing only 5–15 cm tall. Leaves are a dark green or purple, and the bracts are usually purple, burgundy, and lavender, though it is rarely pink or yellowish.
Range This species is endemic to limestone peaks in the Eagle Cap Wilderness, Oregon, between 2,200-3,000 m (7,217–9842 ft).
Habitat It grows in rocky slopes, ledges, gravelly flats and alpine ridges.
Phenology Flowers bloom in July and August.
Conservation Currently treated as a G2 (Imperiled) on NatureServe, due to restricted range and climate change.
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