Geum laciniatum is a perennial herb 0.4-1 m tall, usually with several branched stems; hairy, stipules present.
Leaves alternate, lower leaves long-stalked, blade usually pinnately compound, leaflets coarsely toothed to irregularly lobed, winter rosette leaves often dark blue green, mottled with pale areas, stem leaves 3-parted, irregularly toothed and lobed, upper leaf segments widest above middle, bases wedge-shaped, stipules irregularly deeply toothed.
Flowers white ca 1 cm wide, radially symmetrical, petals 0.3-0.5 cm long, sepals 0.4-1 cm long, stamens numerous, ovaries numerous, styles hooked; blooms June-July.
Fruit dry, in rounded heads 2 cm wide of numerous achenes, styles persistent as hooks that disperse seeds by attaching to fur and clothing in fall, denuded receptacle mostly naked; fruits July-Aug. (Hough 1983).
Wetland status: FAC+.
Frequency in NYC: Very infrequent.
Habitat: Moist to wet woods, soil pH 5-7 (USDA, NRCS 2006).