Sagina japonica.commons.wikimedia.org (Accessed 5/2014).

Sagina japonica is a perennial herb, stems very thin, prostrate to ascending to 10 cm long. 

Leaves opposite, linear, 0.4-1 cm long, 0.1 cm wide, slightly succulent, bristle-tipped, fused at base across stem in a membranous cup (Flora of North America 1993+), basal rosette often present, also sometimes with short, leafy axillary shoots. 

Flowers white (if petals present), petals 5 (sometimes 4 or none), shorter than sepals, sepals 4, to 0.25 cm long; flowers solitary or few, on glandular-hairy stalks in axils or tops of stems; blooming March-May. 

Fruit a dry capsule rounded, to 0.3 cm long, cupped in old sepals, splitting open at top to release minute dark brown seed. 

Wetland status: NL. 

Frequency in NYC: Very infrequent.

 Origin: Japan. 

Habitat: open waste sites, gravelly soil of roadsides, driveways, in dryish soil.