Silene antirrhina is an annual herb, to 80 cm tall, slender, branched, often hairy on lower stem, stem often sticky.
Leaves opposite, stalkless, to 6 x 1.2 cm, becoming smaller up stem.
Flowers white-pink, to 1 cm wide, petals 2-lobed, sometimes absent, calyx spindle-shaped; blooming May-July (Hough 1983).
Fruit a 3-chambered capsule to 1 cm, seeds to 0.8 cm, minutely warty; fruiting to Sept. (Hough 1983).
Wetland status: UPL.
Frequency in NYC: Infrequent.
Habitat: Dry sandy soil, in open areas.
Notes: There is a type: Silene antirrhina forma apetala which has no petals but has dark sticky patches along its stem. It has been found in both the Bronx and Brooklyn (personal communications Z. Wang and M. Feller).