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Contains 15 accepted taxa overall.

Family: Polygonaceae
Common Name:


Division Magnoliophyta - Flowering Plants
Class Magnoliopsida
Sub Class Caryophyllidae
Order Caryophyllales
Genus Polygonum


Citation **
Basionym: **
Type: **

** Not applicable or data not available.


Scientific NameCommon NameStatus
Polygonum achoreum Blake’s knotweedNative, Persisting, S4 (State Rank), G5 (Global Rank)
Polygonum articulatum northern jointweedNative, Persisting, S4 (State Rank), CoC: 5
Polygonum aviculare   
Polygonum aviculare ssp. aviculare common knotweedNot Native, Persisting, SNA (State Rank)
Polygonum aviculare ssp. depressum oval-leaved knotweedNot Native, Persisting, SNA (State Rank)
Polygonum aviculare ssp. neglectum narrow-leaved knotweedNot Native, Persisting, SNA (State Rank), G5 (Global Rank)
Polygonum buxiforme American knotweedNative, Persisting, S1S2 (State Rank), G5 (Global Rank)
Polygonum douglasii Douglas’s knotweedNative, Persisting, S1S2 (State Rank), G5 (Global Rank), CoC: 8
Polygonum erectum erect knotweedNative, Not Persisting, S2S3 (State Rank), G5 (Global Rank), CoC: 10
Polygonum glaucum seabeach knotweedNative, Persisting, S3 (State Rank), CoC: 8
Polygonum polycnemoides Himalayan knotweedNot Native, Not Persisting, SNA (State Rank)
Polygonum ramosissimum   
Polygonum ramosissimum ssp. prolificum proliferous knotweedNative, Persisting, S4 (State Rank), G5T4T5 (Global Rank), CoC: 1
Polygonum ramosissimum ssp. ramosissimum bushy knotweedNative, Persisting, S4 (State Rank), G5T5 (Global Rank), CoC: 1
Polygonum tenue pleated-leaved knotweedNative, Persisting, S3 (State Rank), G5 (Global Rank), CoC: 7