Koenigia phytolaccifolia

Koenigia phytolaccifolia (synonym Aconogonon phytolaccifolium) is a species of flowering plant in the knotweed family,[1] known by the common name poke knotweed.

Koenigia phytolaccifolia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Koenigia
Species:
K. phytolaccifolia
Binomial name
Koenigia phytolaccifolia
Synonyms[1]
  • Aconogonon phytolaccifolium (Meisn. ex Small) Small
  • Aconogonon smallii (Kongar) Soják
  • Polygonum phytolaccifolium Meisn. ex Small
  • Polygonum smallii Kongar

Description

Koenigia phytolaccifolia is a perennial herb up to 200 cm (79 in) tall. The lance-shaped or pointed oval leaves are 10 to 20 centimeters long and borne on petioles. The leaves have large stipules which form reddish ochrea up to 3 centimetres (1.2 inches) long. The inflorescence is a long array of branching cluster of many white or greenish flowers. Each flower is about 4 millimetres (0.16 inches) wide and has tiny protruding stamens tipped with yellow or pink anthers.[2]

Distribution

Koenigia phytolaccifolia is native to the western United States: California, Oregon, Washington, Nevada, Idaho, and Montana.[3][4][5]

References
  1. "Koenigia phytolaccifolia (Meisn. ex Small) T.M.Schust. & Reveal", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2019-02-24
  2. Flora of North America, Aconogonon phytolaccifolium (Meisner ex Small) Small 1917 Poke knotweed
  3. Biota of North America Program 2014 county distribution map
  4. Calflora taxon report, University of California, Aconogonon phytolaccifolium (Meisn. ex Small) Small ex Rydb., Davis knotweed
  5. Turner Photographics, Wildflowers of the Pacific Northwest, Polygonum phytolaccifolium Alpine Knotweed photos, description, partial distribution map


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