Galium triflorum is a perennial herb, stems 20-80 cm long, 4-sided, angles usually minutely barbed, prostrate or sprawling on other vegetation.
Leaves mostly in whorls of 6 on main branches, 1.5-5 cm long, vanilla-scented, narrowly elliptical, abruptly sharp-tipped, margin rough.
Flowers greenish-white, 0.2-0.3 cm wide, in loose clusters; blooms June-Aug.
Fruit dry, about 0.2 cm wide, bristly. Adapted to dispersal by sticking to fur.
Wetland status: FACU.
Frequency in NYC: Very infrequent.
Habitat: Moist woods.
Notes. Dispersal to and establishment in new sites in successional forest, contiguous to old regrowth stands has been calculated at a rate of 0.91 m/yr (Matlack 1994).