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Sierra Nevada claytonia, Sierra Spring beauty

cushion miner's-lettuce, erubescent lettuce, erubescent miner's-lettuce, red miners lettuce, red stem spring beauty, red-stem miner's lettuce

Habit Plants perennial, rhizomatous; rhizome 4–8 mm diam.; periderm 5–15 mm. Plants annual, sometimes overwintering and biennial, with minute, shortened, tuberous bodies; periderm absent.
Stems

3–10 cm.

1–10 cm.

Leaves

basal leaves sessile, blade spatulate to rhombic or ovate, 2–10 × 0.2–3 cm;

cauline leaves sessile, blade ovate, 0.5–2 × 0.2–0.5 cm.

basal leaves in flattened to suberect rosettes, 0.5–6 cm, blade with strong red pigmentation even in juvenile plants, narrowly rhombic to ovate, spatulate, or trullate, 0.5–1.5 × 0.5–1 cm, apex obtuse;

cauline leaves distinct or connate on 1 side or perfoliate, sessile, blade ovate.

Inflorescences

ebracteate.

1-bracteate;

bract leaflike, 0.5–15 mm.

Flowers

12–16 mm diam.;

sepals 2–3 mm;

petals pink to magenta, 8–12 mm;

ovules 6.

2–5 mm diam.;

sepals 1.5–2.5 mm;

petals 2–3 mm, pinkish white to white;

ovules 3.

Seeds

(1–)6, 2–3 mm, shiny and smooth;

elaiosome 1 mm or less.

2–3 mm diam., shiny and smooth;

elaiosome 1–2 mm.

2n

= 14.

= 12, 24, 36.

Claytonia nevadensis

Claytonia rubra

Phenology Flowering May–Aug.
Habitat Mountain fell-fields
Elevation 2000-3500 m (6600-11500 ft)
Distribution
from FNA
CA; NV; OR
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[BONAP county map]
from FNA
CA; CO; ID; MT; NV; OR; SD; UT; WA; WY; BC
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Discussion

Subspecies 2 (2 in the flora).

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

Key
1. Basal leaf blades trullate; cauline leaves distinct or perfoliate
subsp. rubra
1. Basal leaf blades lanceolate, spatulate, rhombic, or ovate; cauline leaves usually connate on only 1 side or perfoliate
subsp. depressa
Source FNA vol. 4, p. 470. FNA vol. 4, p. 473.
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. 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. sarmentosa, C. saxosa, C. scammaniana, C. sibirica, C. tuberosa, C. umbellata, C. virginica, C. washingtoniana
Subordinate taxa
C. rubra subsp. depressa, C. rubra subsp. rubra
Synonyms Montia nevadensis Montia rubra
Name authority S. Watson: in W. H. Brewer et al., Bot. California 1: 77. (1876) (Howell) Tidestrom: Contr. U.S. Natl. Herb. 25: 188. (1925)
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