Cherleria obtusiloba
alpine sandwort
Specimens
Photos

Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to central Oregon, east to the Rocky Mountains as far south as New Mexico.

Habitat: Dry, subalpine to alpine slopes and tundra.

Flowers: June-August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Perrenial, mat-forming cushion, stout taproots; stems erect, 1–12 cm. long, trailing stems 2–20+ cm. long, stipitate-glandular; internodes 2 to 6 times leaf length.

Leaves:

Tightly overlapping, distally cauline, connate proximally, sheathed scariously or herbaceously, sheath 0.3-1.5 mm. long; blade straight and flat or curved outwardly, 3 angled and 3 veined abaxially, midrib prominent, lateral veins weak in distal third, needlelike to subulate, 1–8 × 0.4–1 mm., flexuous with margins thin or scarious, occasionally finely ciliate, apex rounded to acute or apiculate, green, shiny and glabrous; axillary leaves present, among vegetative leaves.

Flowers:

Occasionally 2 to 3 flowered cymes, mostly solitary, terminal flowers, bracts subulate and herbaceous; pedicels 0.3–1.5 cm. long, usually densely stipitate-glandular; hypanthium cup-shaped; sepals prominently 3 veined, narrowly oblong to ovate, 2.9–6.5 mm. long, apex rarely purple, rounded, sepal not enlarging in fruit; petals often white, ovate to spatulate, roughly 1.5 times sepal length, apex entire.

Fruit:

Capsules narrowly ellipsoid, 3.5-6 mm. long; seeds tan to reddish tan, suborbiculate with radicle prolonged into beak, 0.6–0.7 mm., compressed shape.

Accepted Name:
Cherleria obtusiloba (Rydb.) A. J. Moore & Dillenb.
Publication: Willdenowia 47(1): 12. 2017.

Synonyms & Misapplications:
Arenaria obtusiloba (Rydb.) Fernald [HC]
Minuartia obtusiloba (Rydb.) House [FNA5]
Additional Resources:

PNW Herbaria: Specimen records of Cherleria obtusiloba in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Cherleria obtusiloba checklist entry.

E-Flora BC: Cherleria obtusiloba atlas page.

CalPhotos: Cherleria obtusiloba photos.

USDA Plants: Cherleria obtusiloba information.

27 photographs:
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