Claytonia megarhiza(synonym of Claytonia megarhiza var. nivalis) |
Claytonia rosea |
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alpine springbeauty |
Madrean springbeauty, Rocky Mountain Spring beauty, western springbeauty |
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Habit | Plants perennial, with stout, woody caudices; periderm 5–12 mm. | Plants perennial, with globose tubers 20–100 mm; periderm 5–10 mm. |
Stems | 5–25 cm. |
2–15 cm. |
Leaves | basal leaves sessile, dilated at base into broad, succulent sheath, blade rhombic to oblanceolate, 2–10 × 0.4–2.8 cm, apex obtuse; cauline leaves sessile, blade oblanceolate, 2–10 × 2–5 mm. |
basal leaves sometimes absent, petiolate, blade linear to narrowly spatulate, 1–7 × 0.4–2 cm, apex acute to obtuse; cauline leaves petiolate, blade linear, 2–5 cm, apex acute to obtuse. |
Inflorescences | multibracteate; bracts subtending pedicels, apex obtuse. |
multibracteate, rarely 1-bracteate; proximalmost bract leaflike, distal bracts reduced to membranous scales. |
Flowers | 12–20 mm diam; sepals 6–8 mm; petals white, pink, or rose, 5–20 × 3–8 mm; ovules 6. |
8–14 mm diam.; sepals 3–5 mm; petals pink, rose, or magenta, 8–10 mm; ovules 6. |
Seeds | 2–3 mm diam., shiny and smooth; elaiosome 1 mm or less. |
2–3 mm, shiny and smooth; elaiosome 1–2 mm. |
2n | = 12, 16, 24, 32, 34, 36. |
= 16. |
Claytonia megarhiza |
Claytonia rosea |
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Phenology | Flowering May–Aug. | Flowering Feb–May. |
Habitat | Talus, scree, gravelly slopes | Hillsides and mesas of montane ponderosa and Chihuahuan pine and oak belts |
Elevation | 2000-4000 m (6600-13100 ft) | 800-2400 m (2600-7900 ft) |
Distribution |
CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC; NT |
AZ; CO; NM; UT; Mexico
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Discussion | Claytonia rosea is morphologically distinct from C. lanceolata based on early cytological and ecological study of the two species by D. K. Halleck and D. Wiens (1966) and the author’s review of type material. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 4, p. 469. | FNA vol. 4, p. 472. |
Parent taxa | Portulacaceae > Claytonia | Portulacaceae > Claytonia |
Sibling taxa | ||
Synonyms | C. arctica var. megarhiza, C. megarhiza var. bellidifolia, C. megarhiza var. nivalis | C. lanceolata var. rosea |
Name authority | (A. Gray) Parry ex S. Watson: Smithsonian Misc. Collect 258: 118. (1878) | Rydberg: Bull. Torrey Bot. Club 31: 404. (1904) |
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