Reynoutria japonica Houtt.

Japanese Knotweed

Synonyms: Fallopia japonica, Pleuropterus cuspidatus, Polygonum cuspidatum

CLASSIFICATION

Main Group: Plant

Sublevel 1: Angiosperm

Sublevel 2: Eudicot

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Family: Polygonaceae

Genus: Reynoutria

Species: Reynoutria japonica

STATUS IN NEW ENGLAND

Origin: Introduced

Invasive, Pest, or Pathogen?: Yes

Listing:
MIPAG - Invasive
MA Prohibited Plant List
CT Invasive Plant List
CT Prohibited by Statute
ME Advisory List of Invasive Plants
ME Invasive Plant Do Not Sell List
NH Comprehensive Invasive Plant List - Prohibited Species
RI Invasive Species Council List of Invasive Plants in RI
VT Noxious Weeds
NY State Prohibited and Regulated Invasive Plants

Rarity Designations: None

BIOLOGY/ECOLOGY

Feeding Type: Photoautotroph

Type of Spores/Gametophytes: Two types of spores, unisexual gametophytes

HABITAT

Wetland Indicator Status: FACU

PHOTOS OF Reynoutria japonica