Overview

Distribution

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Description

Plants annual, with minute, tuberous bodies; periderm absent. Stems 5-10 cm. Leaves: blades gray, beige, or pink, glaucous; basal leaf blades linear or spatulate, 1-6 × 0.05-0.5 cm; cauline leaves sessile, distinct or partially connate into horn shape, blade spatulate, 0.2-4.5 cm, or subperfoliate, blade 0.2-4.5 cm wide. Inflorescences 1-bracteate; bract leaflike, 0.5-15 mm. Flowers 3-5 mm diam.; sepals 1.5-2.5 mm; petals white or pinkish, 2-5 mm; ovules 3. Seeds 0.5-1 mm, tuberculate; elaiosome inserted in wide notch of seed coat, 0.5-1 mm. 2n = 16, 32, 48.
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

Reasons: Found throughout much of western and northern California, western Oregon, and Washington State and just into southern British Columbia and extreme northwestern Nevada. At least 73 U.S. county records reported by Kartesz (2003 draft data). Habitats include a range of conditions from dry to moist, clay banks to sand or talus scree (Hickman et al. 1993, FNA 2003).

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Wikipedia

Claytonia exigua

Claytonia exigua is a species of wildflower in the purslane family known by the common names serpentine springbeauty and pale claytonia. It is native to western North America from British Columbia to Idaho to California, where it grows in a number of habitat types, including plant communities on serpentine soils. This is a fleshy annual herb producing a patch of erect or leaning stems up to about 15 centimeters tall. The thick leaves are linear in shape and fingerlike near the base of the plant and crescent to disc-shaped farther up the stem. The plant is hairless and waxy and varies in color from green to pinkish, grayish, or brownish. The inflorescence holds several flowers on drooping pedicels which turn erect as the plant develops fruit. The flower has five lobed petals each a few millimeters long and in shades of pink, white, or pink-streaked white. The fruit is a capsule less than three millimeters long containing a few tiny seeds.

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Names and Taxonomy

Taxonomy

Comments: Kartesz (1999) includes all material of Claytonia spathulata (Kartesz 1994) in C. exigua ssp. exigua. Per Miller and Chambers (1993), Claytonia spathulata is an invalid name: "The name Claytonia exigua Torrey & A. Gray, of 1838, must replace the earlier C. spathulata Douglas ex Hooker, 1832, because the latter is a homonym of C. spathulata Eaton, 1824."

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