Family: Polygonaceae
jumpseed, woodland knotweed
[Antenoron virginianum (L.) Roberty & Vautier, more...]
Merel R. Black
Christopher Noll
University of Wisconsin - Madison (WIS-VP)
Etymology: Persicaria: peach-like, the medieval name for knotweed
Plants: erect, perennial, 20"-40" tall forb; stems nodes hairy; from rhizomes
Leaves: up to 6" long, broad, lance-like to oval with a sharp tip
Flowers: white to greenish, 4-parted, 1/8" long, petals and petal-like sepals; inflorescence 4"-16" very thin, spike-like, interrupted, terminal clusters; blooms July-Sept.
Fruits: dry, oval seed with a hooked tip that "jumps" off the plant when touched
Habitat: shade to semi-shade; moist to wet; riverbanks, woods, cliffs, rocks
Plants: erect, perennial, 20"-40" tall forb; stems nodes hairy; from rhizomes
Leaves: up to 6" long, broad, lance-like to oval with a sharp tip
Flowers: white to greenish, 4-parted, 1/8" long, petals and petal-like sepals; inflorescence 4"-16" very thin, spike-like, interrupted, terminal clusters; blooms July-Sept.
Fruits: dry, oval seed with a hooked tip that "jumps" off the plant when touched
Habitat: shade to semi-shade; moist to wet; riverbanks, woods, cliffs, rocks
Floristic Rating: Coefficient of Conservatism = 7, Wetland Indicator = FAC USDA Plants Database: Federal Distribution and detailed information including photos Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions
Christopher Noll
Hugh H. Iltis
Christopher Noll
Christopher Noll
Aaron_Carlson
Aaron_Carlson
