Boreal Starwort: Stellaria borealis ssp. borealis (Synonyms: Stellaria borealis var. bongardiana, Stellaria calycantha var. bongardiana, Stellaria calycantha var. calycantha, Stellaria calycantha var. floribunda) - Native perennial. Inflorescence terminal or axillary, few to many flowered. Petals shorter than the sepals, which are 3-4.5 mm long. Leaf blades lanceolate, dull green, and greater than 2 cm long with bumpy margins at 20 x magnification.
Boreal Starwort, Few-flowered Northern Starwort: Stellaria borealis ssp. sitchana (Synonyms: Stellaria calycantha var. bongardiana, Stellaria calycantha var. sitchana) - Native perennial. Inflorescence terminal or axillary, few to many flowered. Petals shorter than the sepals, which are 3-4.5 mm long. Leaf blades lanceolate, dull green, and greater than 2 cm long with bumpy margins at 20 x magnification.
Northern Starwort, Northern Bog Starwort, Northern Chickweed: Stellaria calycantha (Synonyms: Stellaria calycantha var. calycantha, Stellaria calycantha var. simcoei, Stellaria simcoei) - Native perennial. Inflorescence terminal or axillary, few to many flowered. Petals shorter than the sepals, which are 1.5-3 mm long. Leaf blades elliptic to ovate, shiny green, the largest less than 2 cm long with glabrous margins.
Crisped Starwort, Curled Starwort, Ruffled Starwort: Stellaria crispa (Synonyms: Alsine crispa, Stellaria borealis var. crispa) - Weedy perennial. Petals lacking to shorter than the sepals. Sepals 2-4 mm long. Leaves ovate.
Grass-like Starwort, Grass-leaf Starwort, Lesser Starwort, Lesser Stitchwort: Stellaria graminea (Synonym: Alsine graminea) - Weedy perennial. The petals are longer than the sepals which are 4-5.5 mm long with ciliate margins. Leaf margins glabrous. Found in the southern Wallowa Mts. of northeastern Oregon and around Pullman, WA.
Long-leaved Starwort: Stellaria longifolia (Synonym: Stellaria longifolia var. longifolia) - Native perennial. Inflorescence many-flowered, open with spreading branches. The pedicels are spreading to reflexed. The petals are longer than the sepals which are 3-4 mm long with glabrous margins. Leaf margins bumpy at 20 x magnification. Found at several locations about the Steens Mt. and Owyhee River in southeastern Oregon.
Long-stalk Starwort: Stellaria longipes ssp. longipes (Synonyms: Stellaria longipes var. altocaulis, Stellaria longipes var. laeta, Stellaria longipes var. longipes) - Native perennial. Inflorescence narrow with 1-7 flowers. Pedicels ascending to erect. Petals longer than the sepals, which are 3-5.5 mm long. Leaf margins glabrous. Fairly common in moist places across eastern Oregon and Washington.
Common Chickweed: Stellaria media (Synonyms: Alsine media, Stellaria apetala, Stellaria media ssp. media, Stellaria media var. procera) - European, annual weed. Petals longer than 1/2 as long as the sepals. Sepals 3-4.5 mm long. Leaves evenly spaced along stems. Leaf blades ovate. Internodes of stem with a line of wavy hairs. Petals shorter than sepals which are 3-4.5 mm long.
Shining Chickweed, Shiny Chickweed, Shiny Starwort: Stellaria nitens (Synonym: Stellaria praecox) - Annual. Petals less than 1/2 as long as the sepals, which are 2.8-4.2 mm long. Leaves crowded near base. Leaf blades linear-lanceolate to occasionally ovate. Internodes of stems glabrous. Abundant in eastern Washington.
Bluntsepaled Starwort, Clustered Mountain Starwort, Rocky Mt. Starwort: Stellaria obtusa (Synonyms: Alsine obtusa, Alsine viridula, Alsine washingtoniana, Stellaria viridula, Stellaria washingtoniana) - Native perennial. Flowers solitary in leaf axils. Petals lacking. 4 sepals present, each obtuse and 1.4-3.5 mm long. Leaf blades ovate. Found in the northern Blue Mts. of Oregon and Washington in the Wallowa Mts of northeastern Oregon.
Umbellate Chickweed, Umbellate Starwort, Umbrella Starwort: Stellaria umbellata (Synonyms: Alsine baicalensis, Stellaria gonomischa, Stellaria weberi) - Native perennial. Flowers numerous (except in alpine plants) in umbel-like cymes. The pedicels are widely spreading. The petals are shorter than the sepals which are 1.5-2.5 mm long. Floral bracts membranous. Found in the northern Blue Mts. and Wallowa Mts. of northeastern Oregon and on the Steens Mt. of southeastern Oregon.