Sagina
pearlwort
5 species
3 subspecies and varieties
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Sagina apetalaannual pearlwort
Distribution: Occurring in the lowlands west of the Cascades crest in Washington; British Columbia south to California; Kansas.
Habitat: Waste ground.
Origin: Introduced from Europe
Flowers: May-June
Sagina decumbenswestern pearlwort
Distribution: Chiefly west of the Cascades in Washington; British Columbia south to southern California.
Habitat: Moist soil at low elevations, but not typically coastal.
Origin: Native
Flowers: May-August
ssp. occidentalis – western pearlwort
Sagina maximastick-stemmed pearlwort
Distribution: Occurring in counties along the coast in Washington; distinctly coastal, Alaska south to Monterey County, California.
Habitat: Moist sand or rocks.
Origin: Native
Flowers: June-September
ssp. crassicaulis – stick-stemmed pearlwort
Sagina procumbensbird-eye pearlwort
Distribution: Occurring on both sides of the Cascades crest in Washington, though more common west of the crest; Alaska to California, east to the Rocky Mountains, Great Lakes region, and northeastern North America.
Habitat: Moist areas, often where disturbed, at low elevations; common garden weed.
Origin: Introduced from Europe
Flowers: May-October
Sagina saginoidesalpine pearlwort, arctic pearlwort
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains in the U.S. and Alberta; east across northern Canada to Greenland.
Habitat: Open areas, typically where at least seasonally moist, from middle elevations to the alpine.
Origin: Native
Flowers: May-September.