Geranium sibiricum is an annual or short-lived perennial herb, stems 0.3-1 m long, weak, thin, hairy, often reddish.
Leaves alternate, palmately divided, 4-7 cm wide, kidney-shaped, 3-5 coarsely toothed divisions.
Flowers pale pink, small, ca 1 cm wide, petals hardly longer than sepals, sepals 0.5-0.7 cm long, tipped by a short awn, style column 1-1.5 cm long ; blooms and fruits Aug.-Sept..
Fruit dry, linear, to 2 cm long, above, 1-seeded carpels cupped in persistent calyx.
Wetland status: UPL.
Frequency in NYC: Very infrequent.
Habitat: Open areas, roadsides.