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Claytonia megarhiza var. nivalis

alpine springbeauty

Lake Washington claytonia, Lake Washington miner's lettuce, Lake Washington springbeauty, Suksdorf's Spring beauty, Washington spring-beauty

Habit Plants perennial, with stout, woody caudices; periderm 5–12 mm. Plants annual, with minute, tuberous body; periderm absent.
Stems

5–25 cm.

3–15 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 petiolate, 2–30 cm, blade rhombic or ovate, 2–3 cm;

cauline leaves sessile, distinct or slightly connate on 1 side only, blade ovate, 1–3 cm.

Inflorescences

multibracteate;

bracts subtending pedicels, apex obtuse.

multibracteate, or with 2–several bracts near base of inflorescence;

bracts leaflike, 2–10 mm.

Flowers

12–20 mm diam;

sepals 6–8 mm;

petals white, pink, or rose, 5–20 × 3–8 mm;

ovules 6.

4–8 mm diam.;

sepals 2–3.5 mm;

petals pink, 3–4 mm;

ovules 3.

Seeds

2–3 mm diam., shiny and smooth;

elaiosome 1 mm or less.

1–2 mm diam., shiny and smooth;

elaiosome 1 mm.

2n

= 12, 16, 24, 32, 34, 36.

= 24.

Claytonia megarhiza

Claytonia washingtoniana

Phenology Flowering May–Aug. Flowering Jan–Jun.
Habitat Talus, scree, gravelly slopes Coastal bluffs and disturbed places associated with red alder and moss mats in boulders and cliffs of moist coastal forests
Elevation 2000-4000 m (6600-13100 ft) 0-500 m (0-1600 ft)
Distribution
from FNA
CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC; NT
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

Claytonia washingtoniana is a fertile hybrid between C. sibirica and C. perfoliata.

of conservation concern

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 4, p. 469. FNA vol. 4, p. 475.
Parent taxa Portulacaceae > Claytonia Portulacaceae > Claytonia
Sibling taxa
C. acutifolia, C. arctica, C. arenicola, C. caroliniana, C. cordifolia, C. exigua, C. gypsophiloides, C. lanceolata, C. megarhiza, C. multiscapa, C. nevadensis, C. ogilviensis, C. palustris, C. parviflora, C. perfoliata, C. rosea, C. rubra, C. sarmentosa, C. saxosa, C. scammaniana, C. sibirica, C. tuberosa, C. umbellata, C. virginica, C. washingtoniana
C. acutifolia, C. arctica, C. arenicola, C. caroliniana, C. cordifolia, C. exigua, C. gypsophiloides, C. lanceolata, C. megarhiza, C. multiscapa, C. nevadensis, C. ogilviensis, C. palustris, C. parviflora, C. perfoliata, C. rosea, C. rubra, C. sarmentosa, C. saxosa, C. scammaniana, C. sibirica, C. tuberosa, C. umbellata, C. virginica
Synonyms C. arctica var. megarhiza, C. megarhiza var. bellidifolia, C. megarhiza var. nivalis Montia washingtoniana
Name authority (A. Gray) Parry ex S. Watson: Smithsonian Misc. Collect 258: 118. (1878) (Suksdorf) Suksdorf: Werdenda 1: 10. (1923)
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