Burke: Stellaria obtusa vs. Stellaria graminea

	Stellaria obtusa	Stellaria graminea
	blunt-sepaled starwort	grass-leaf starwort
Habit		Spreading, glabrous perennial with 4-angled, decumbent or ascending stems up to 10 dm. long
Leaves		Leaves opposite, all cauline, lanceolate to linear-lanceolate, sessile, 1.5-2.5 cm. long.
Flowers		Flowers many in a diffuse inflorescence, the pedicels slender, spreading, 2-4 cm. long; sepals 5, lanceolate, pointed, 3.5-5.5 mm. long, the margins membranous and hairy; petals 5, white, exceeding the sepals; styles 3, 2-4 mm. long.
Fruits		Capsule ovoid, greenish-yellow, equaling the calyx.

	Stellaria obtusa	Stellaria graminea
Flowering time	June-July	May-July
Habitat	Moist forest and riparian zone understory, talus slopes, from low to moderate elevations.	Roadsides, fields, pastures, and lawns.
Distribution	Occurring on both sides of the Cascades in Washington; British Columbia to California, east to the Rocky Mountains. [WildflowerSearch map] [BONAP county map]	Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, and from the southern Great Plains east to the Atlantic Coast. [WildflowerSearch map] [BONAP county map]
Origin	Native	Introduced from Eurasia
Conservation status	Not of concern	Not of concern
Sibling taxa	S. alsine, S. borealis, S. calycantha, S. crispa, S. graminea, S. humifusa, S. longifolia, S. longipes, S. media, S. neglecta, S. nitens, S. pallida, S. umbellata	S. alsine, S. borealis, S. calycantha, S. crispa, S. humifusa, S. longifolia, S. longipes, S. media, S. neglecta, S. nitens, S. obtusa, S. pallida, S. umbellata
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Stellaria graminea

blunt-sepaled starwort

grass-leaf starwort

Habit

Spreading, glabrous perennial with 4-angled, decumbent or ascending stems up to 10 dm. long

Leaves

Leaves opposite, all cauline, lanceolate to linear-lanceolate, sessile, 1.5-2.5 cm. long.

Flowers

Flowers many in a diffuse inflorescence, the pedicels slender, spreading, 2-4 cm. long;

sepals 5, lanceolate, pointed, 3.5-5.5 mm. long, the margins membranous and hairy;

petals 5, white, exceeding the sepals;

styles 3, 2-4 mm. long.

Fruits

Capsule ovoid, greenish-yellow, equaling the calyx.

Stellaria graminea

Flowering time

June-July

May-July

Habitat

Moist forest and riparian zone understory, talus slopes, from low to moderate elevations.

Roadsides, fields, pastures, and lawns.

Distribution

Occurring on both sides of the Cascades in Washington; British Columbia to California, east to the Rocky Mountains.

[WildflowerSearch map]

[BONAP county map]

Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains, and from the southern Great Plains east to the Atlantic Coast.

[WildflowerSearch map]

[BONAP county map]

Origin

Native

Introduced from Eurasia

Conservation status

Not of concern

Sibling taxa