Polygonum fowleri

Polygonum fowleri, commonly called Fowler's knotweed or Hudsonian knotweed, is a plant species native to the seashores of the northern part of North America. It has been reported from every Canadian province and territory except Alberta and Saskatchewan, as well as from Maine, Alaska, Washington, Oregon, California, and St. Pierre & Miquelon. It is usually found in gravelly locations along the seacoast.[2][3]

Polygonum fowleri
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Polygonum
Species:
P. fowleri
Binomial name
Polygonum fowleri
Synonyms[1]
  • Polygonum allocarpum S.F. Blake
  • Polygonum hudsonianum (S.J. Wolf & McNeill) H.R. Hinds
  • Polygonum caurianum subsp. hudsonianum S.J. Wolf & McNeill

Polygonum fowleri is a prostrate to ascending herb, often with zigzagged stems. Inflorescences are in the axils of the leaves, each with up to 10 white or pink flowers.[2][4]

Subspecies

Two subspecies are recognized, treated by some botanists as distinct species:[2]

References
  1. The Plant List, Polygonum fowleri B.L. Rob.
  2. Flora of North America Polygonum fowleri B. L. Robinson, 1902.
  3. Biota of North America Program 2014 state-level distribution map
  4. Robinson, Benjamin Lincoln. 1902. Rhodora 4(40): 67.
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