Polygonum

Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Contains 15 accepted taxa overall.

Family:	Polygonaceae
Common Name:

Classification

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

Citation

Citation	**
Basionym:	**
Type:	**

** Not applicable or data not available.

Species

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

For more information, contact: David Werier or Kyle Webster

Web Development: USF Water Institute

A member of the University of South Florida family of PlantAtlas.org sites

Citation Information:

Werier, David, Kyle Webster, Troy Weldy, Andrew Nelson, Richard Mitchell†, and Robert Ingalls†. 2024 New York Flora Atlas. [S. M. Landry and K. N. Campbell (original application development), USF Water Institute. University of South Florida]. New York Flora Association, Albany, New York.

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Definition: Vouchered Specimen

A voucher specimen is a pressed and thoroughly dried plant sample deposited in a herbarium, and is intended to be a permanent record supporting research purposes. A voucher may be a record of a plant's occurrence in a particular area, or a specific example of a plant used in a scientific investigation.

Proper vouchers display all the necessary attributes for complete identification of the plant, and are to be accompanied by accurate locality, habitat, collection time, and collector data.

Only plant populations vouchered by specimens deposited in Index Herbariorum (http://sweetgum.nybg.org/science/ih/) recognized herbaria are represented on this map.