Species: Polygonum polygaloides ssp. confertiflorum
Dense-flower Knotweed
Species
Encyclopedia of Puget Sound
Classification
Kingdom
Plantae
Phylum
Anthophyta
Class
Dicotyledoneae
Order
Polygonales
Family
Polygonaceae
Genus
Polygonum
NatureServe
Classification
Other Global Common Names
Fruitleaf Knotweed - fruitleaf knotweed - renouée à fleurs entassées
Informal Taxonomy
Plants, Vascular - Flowering Plants - Buckwheat Family
Formal Taxonomy
Plantae - Anthophyta - Dicotyledoneae - Polygonales - Polygonaceae - Polygonum
Conservation Status
NatureServe Global Status Rank
G4G5T3T4
Global Status Last Reviewed
1996-02-27
Global Status Last Changed
1996-02-27
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.AB=S3&CA.BC=S1&CA.SK=S2&US.AZ=SNR&US.CA=SNR&US.CO=SNR&US.ID=SNR&US.MT=S2&US.NV=SNR&US.NM=SNR&US.OR=SNR&US.UT=SNR&US.WA=SNR&US.WY=S3" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
Hickman (1993) lists: northern California to Washington, Wyoming and Montana. Several other sources corroborate Hickman under the synonym Polygonum confertiflorum: Peck (1961) lists Willamette Valley and east of Cascades in Oregon. Kartesz (1988) cites only Elko County, Nevada. Lackschewitz (1991) notes one report from southwest Ravalli County, Montana. Davis (1952) confirms P. confertiflorum in Idaho. And Scoggan lists a range of southwest Saskatchewan south to northern California and northern Wyoming. Kartesz (unpublished data 1995) also includes Alberta, British Columbia, Arizona and New Mexico for P. polygaloides ssp. confertiflorum.