Claytonia megarhiza(synonym of Claytonia megarhiza var. nivalis) |
Claytonia umbellata |
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alpine springbeauty |
Great Basin claytonia, Great Basin springbeauty, umbellate springbeauty |
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Habit | Plants perennial, with stout, woody caudices; periderm 5–12 mm. | Plants perennial, with globose tubers 10–50 mm diam., mature plants rhizomatous; periderm 5–20 mm. |
Stems | 5–25 cm. |
2–25 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 somtimes absent, petiolate, 5–25 cm, blade elliptic to rhombic, 1–3 × 0.2–2 cm; cauline leaves petiolate, blade elliptic to ovate 1.5–5 × 1–3 cm, abruptly tapered at base. |
Inflorescences | multibracteate; bracts subtending pedicels, apex obtuse. |
ebracteate. |
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 5–7 mm; petals pink to magenta, 6–12 mm; ovules 6. |
Seeds | 2–3 mm diam., shiny and smooth; elaiosome 1 mm or less. |
1–2 mm, smooth and shiny; elaiosome 1 mm or less. |
2n | = 12, 16, 24, 32, 34, 36. |
= 16. |
Claytonia megarhiza |
Claytonia umbellata |
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Phenology | Flowering May–Aug. | Flowering May–Aug. |
Habitat | Talus, scree, gravelly slopes | North- and east-facing talus and scree slopes of drier mountain areas, subalpine coniferous forests |
Elevation | 2000-4000 m (6600-13100 ft) | 100-3000 m (300-9800 ft) |
Distribution |
CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC; NT |
CA; OR
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Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 4, p. 469. | FNA vol. 4, p. 475. |
Parent taxa | Portulacaceae > Claytonia | Portulacaceae > Claytonia |
Sibling taxa | ||
Synonyms | C. arctica var. megarhiza, C. megarhiza var. bellidifolia, C. megarhiza var. nivalis | |
Name authority | (A. Gray) Parry ex S. Watson: Smithsonian Misc. Collect 258: 118. (1878) | S. Watson: Botany (Fortieth Parallel), 43, plate 6, figs. 4, 5. (1871) |
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