Vascular Plants - Caryophyllaceae - Minuartia:
Minuartia obtusiloba
Page Author: David Giblin
twinflower sandwort, alpine sandwort 
Blooms: June-September
Habit: herb
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: In mountains throughout much of Washington; Alaska south to Oregon, south in the Rocky Mountains to New Mexico.
Habitat: Subalpine to alpine ridges and talus slopes.
Species Description:

General: Tufted perennial, forming mats up to 4 dm. broad, the stems trailing, the flowering stems 1-6 cm. tall, glandular-pubescent.
Leaves: Leaves opposite, numerous, over-lapping, 1-nerved, linear, 5-8 mm. long and less than 0.5 mm. broad.
Flowers: Flowers erect, usually solitary, with 1-2 pairs of bracts along the stem; sepals 5, 4-5 mm. long, 3-nerved, oblong, obtuse, the tip hood-shaped; petals 5, white, up to twice as long as the sepals; stamens 10; styles 3.
Fruits: Capsule ovoid-cylindric, up to twice as long as the sepals, opening by 3 valves.
Accepted Name:
Minuartia obtusiloba (Rydb.) House

Treated in Flora of the PNW as:
Arenaria obtusiloba
Additional Resources:

PNW Herbaria Specimens: View list of all Minuartia obtusiloba specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Minuartia obtusiloba specimens in the WTU Herbarium database.

Washington Flora Checklist: Minuartia obtusiloba treatment.

E-Flora BC: Minuartia obtusiloba atlas page.

CalPhotos: Minuartia obtusiloba images.

USDA Plants Database: Minuartia obtusiloba.
Additional photographs of Minuartia obtusiloba:
(click on a thumbnail to view larger photo)
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