Vascular Plants - Caryophyllaceae - Arenaria:
Arenaria serpyllifolia
Page Author: David Giblin
thyme-leaf sandwort 
Blooms: May-July
Habit: herb
Duration: annual
Origin: Introduced from Europe
Distribution: Widely distributed across Washington; introduced in most of North America.
Habitat: Weed in various habitats.
Species Description:

General: Rough-hairy annual, glandular above, the 1-several slender stems erect to ascending, simple to freely-branched, 10-30 cm. tall.
Leaves: Leaves opposite, ovate to lanceolate, 3-nerved, much shorter than the internodes, 3-7 mm. long and 1.5-4 mm. wide, short-petiolate.
Flowers: Flowers several in an open, diffuse, leafy-bracteate inflorescence; pedicels up to 4 times as long as the flowers; sepals 5, lanceolate, pointed, 3 mm. long; petals 5, white, 2/3 as long as the sepals; stamens 10; styles 3.
Fruits: Capsule ovoid, equaling the sepals, opening by 6 valves.
Subspecies & Varieties:
Accepted Name:
Arenaria serpyllifolia L.
Synonyms:
(none)

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

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

WTU Herbarium Specimens: View list of Arenaria serpyllifolia specimens in the WTU Herbarium database.

Washington Flora Checklist: Arenaria serpyllifolia treatment.

E-Flora BC: Arenaria serpyllifolia atlas page.

CalPhotos: Arenaria serpyllifolia images.

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

Richard Old

Richard Old

Richard Old

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Ben Legler, 2005

Richard Old

Richard Old

G. D. Carr, 2009

G. D. Carr, 2009

G. D. Carr, 2009
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Washington Native Plant Society
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