Distribution: Occurring west of the Cascades crest along the coastal areas in Washington; British Columbia to Baja California.
Habitat: Along the sea shore, often in salt marshes and rock crevices in the splash zone.
Flowers: June-September
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Self-pollination, bees, flies
Herbaceous perennial with a thick, woody, branched crown, the stems decumbent to ascending, up to 4 dm. long and 1-2 mm. thick; herbage somewhat glandular-pubescent.
Leaves opposite, 2-several per node, 1.5-4 cm. long and 1-2.5 mm. broad, tipped with a sharp, slender point.
Inflorescence a lax, open, leafy, terminal cyme; sepals 5, 5-9 mm. long, acute; petals 5, dark to pale pink, entire, shorter than the sepals; stamens 10, attached under the superior ovary; styles 3, distinct, 0.6-1.2 mm. long.
PNW Herbaria: Specimen records of Spergularia macrotheca in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Spergularia macrotheca checklist entry
OregonFlora: Spergularia macrotheca information
E-Flora BC: Spergularia macrotheca atlas page
CalPhotos: Spergularia macrotheca photos