UW Burke Herbarium species comparison

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Arenaria lanuginosa

Arenaria serpyllifolia

thyme-leaf sandwort
Habit 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.

Arenaria lanuginosa

Arenaria serpyllifolia
Flowering time May-July
Habitat Dry to moist, barren to wooded places.
Distribution
[WildflowerSearch map]
[BONAP county map]
Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Europe
Conservation status Not of concern
Sibling taxa
A. paludicola, A. serpyllifolia
A. paludicola
Subordinate taxa
A. serpyllifolia var. serpyllifolia
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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