Plants of USA and Canada

Scientific or common name:

Polygonum douglasii Greene


POLYGONACEAE Family selection - Buckwheat family (Angiosperms - Flowering plants)

Taxon Page:

Name: Polygonum douglasii Greene Taxon selection
Nomencl. ref.: Bull. Calif. Acad. Sci. 1(3): 125. 1885 [28 Feb 1885]
Rank: species

pictures Images of Polygonum douglasii


Common names

US name U.S. name: Douglas' knotweed
en English name: Douglas's knotweed

Grown habit: Forb/herb
Duration: Annual
 

Synonyms:


Subspecies / Varieties:
1) Polygonum douglasii Greene ssp. austiniae (Greene) E. Murray
2) Polygonum douglasii Greene ssp. douglasii
3) Polygonum douglasii Greene ssp. engelmannii (Greene) Kartesz & Gandhi
4) Polygonum douglasii Greene ssp. johnstonii (Munz) J.C. Hickman
5) Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman
6) Polygonum douglasii Greene ssp. nuttallii (Small) J.C. Hickman
7) Polygonum douglasii Greene ssp. spergulariiforme (Meisn. ex Small) J.C. Hickman
8) Polygonum douglasii Greene var. austiniae (Greene) M.E. Jones
9) Polygonum douglasii Greene var. johnstonii Munz
10) Polygonum douglasii Greene var. latifolium (Engelm.) Greene
11) Polygonum douglasii Greene var. microspermum (Engelm.) Dorn



TAXONOMY

Kingdom: Plantae
Subkingdom: Tracheobionta
Superdivision: Spermatophyta
Division: Magnoliophyta
Class: Magnoliopsida
Subclass: Caryophyllidae
Order: Polygonales
Family: Polygonaceae
Genus: Polygonum
Species:


Page counter: 279 ( AVG: 222.29 / 291.376 )



Gallery:

Polygonum douglasii
Polygonum douglasii
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 664.

Polygonum douglasii
Polygonum douglasii
Jose Hernandez - USDA-NRCS PLANTS Database - Not copyrighted image


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Links:
- The New Plantfinder - Images and local names of vascular plants - Project Dryades / KeyToNature, coordinated by the Department of Life Sciences, University of Trieste
- Lichens - Interactive identification keys to the lichens
- Acta Plantarum - Forum and Image Gallery (Plants, Animals, Mushrooms)




Distribution in USA and Canada (*)
USA (AZ, CA, CO, IA, ID, MD, ME, MI, MN, MT, ND, NE, NH, NM, NV, NY, OR, SD, UT, VT, WA, WY), CAN (AB, BC, MB, ON, QC, SK)

Distributional map for Polygonum douglasii Greene
Map for Polygonum douglasii Greene
(*) USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 28 August 2009). National Plant Data Center, Baton Rouge, LA 70874-4490 USA



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More species:
1) Polygonum douglasii Greene ssp. douglasii [396]
2) Polygonum douglasii Greene ssp. engelmannii (Greene) Kartesz & Gandhi [377]
3) Polygonum douglasii Greene ssp. majus (Meisn.) J.C. Hickman [315]
4) Polygonum douglasii Greene var. microspermum (Engelm.) Dorn [128]
5) Polygonum dumetorum L. var. scandens (L.) A. Gray [131]
6) Polygonum equisetiforme Sm. [2147]
7) Polygonum exsertum auct. non Small. p.p. [90]
8) Polygonum fugax Small [80]
9) Polygonum hydropiper L. [986]
10) Polygonum hydropiperoides Michx. var. psilostachyum H. St. John [151]

29-Apr-2024 - Week-18





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