Stellaria longipes is a perennial herb to 20 cm from rhizomes, often waxy-whitish.
Leaves opposite, to 4 cm long, narrowly lance-shaped to linear, widest near base.
Flowers white, radially symmetrical, petals 5, deeply divided, appearing as 10, to 0.8 cm long, sepals 5, narrow, to 0.7 cm long; inflorescence stems forking with small, membranous bracts, June–Aug.
Fruit a dry capsule, egg-shaped, dark purple, longer than persistent sepals, seeds oval 0.1 cm.
Wetland status: FACU-.
Frequency in NYC: Very infrequent.
Habitat: Open areas.