Thalictrum pubescens  (T. polygamum) tall meadow rue Ranunculaceae THPU; Bx, br, pb, vc (? Z. Wang 4/2017); Q, cu (Greller 1977); R, bd, bm, w;

  

Thalictrum pubescens Copyright © 2014 Glen Mittelhauser.New England Wild Flower Society.gobotany.newenglandwild.org

Thalictrum pubescens Copyright © 2014 Glen Mittelhauser.New England Wild Flower Society.gobotany.newenglandwild.org (Accessed 11/2014)

Thalictrum pubescens is a perennial herb; upright, to 3 m from a root crown. 

Leaves alternate, basal and lower stem leaves stalked, upper leaves sessile, blade 3 times irregularly compound, leaflets 11-30, 1.1-6.8 cm long, 0.5-7.0 cm wide, 3-lobed, base rounded, surface dull bluish-green. 

Flowers dioecious (usually), white to pale green; no petals, sepals 4, to 0.3 cm, white to purplish, conspicuous flower parts are white filaments, 0.2-0.7 cm long, of the numerous club-shaped stamens, female flowers with ovaries white, becoming green then brown at maturity; flowers not drooping; inflorescence branched; blooms June- Aug. 

Fruit dry, a small, rounded head of achenes, achene to 0.5 cm, ribbed, flattened, beaked by old style (Flora of North America 1993+; Scott 2004). 

Wetland status: FACW+. 

Frequency in NYC: Infrequent. 

Origin: Native. 

Habitat: Wet woods, meadows, marshes, stream banks. Tolerant of shade.  .