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Physaria alpina
Also called Alpine Bladderpod
Physaria alpina, also known as alpine twinpod or Avery Peak twinpod, is a rare plant species that only grows in the mountains of Colorado above timberline.
Alpine twinpod is endemic to Colorado where it has been reported in just five counties, Park, Lake, Pitkin, Gunnison, and Delta. It grows in the drainage of the Gunnison River in the west and in the Mosquito Range in central Colorado. It ranges from 3,500 meters (11,500 ft) up to as much as 4,000 meters (13,000 ft).
Alpine twinpod is occasionally grown by rock gardeners and like many alpine twinpods are relatively easy to grow in fast-draining gravel beds or in trough gardens. It will reproduce from seed quite readily in suitable garden conditions, but does not do so rapidly that it crowds out other plants in troughs or raised bed. The seeds germinate readily, nearly all seeds experimented on, with or without cold-moist stratification when subjected to alternating light/dark cycles of 12 hours at 20 °C (68 °F) and 10 °C (50 °F) respectively. At colder alternating temperatures of 15 °C (59 °F) and 6 °C (43 °F) none sprout without cold-moist stratification and only around 30% could be induced to sprout with a 12-week treatment of stratification at 2–3 °C (36–37 °F).
Bladderpod · Arctic Bladderpod · Front Range twinpod · Chambers' twinpod · Dudley Bluffs Bladderpod · Common twinpod · Fendler's Bladderpod · Missouri Bladderpod · Pointtip twinpod · Fremont Bladderpod · Globe Bladderpod · Bladderpod
Text excerpted from the Wikipedia article Physaria alpina by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
