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Internal ID UUID64404b68bcf57006598148
Scientific name Polygonum californicum
Authority Meisn.
First published in Prodr. 14: 100 (1856)

Description Top

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Polygonum californicum, also known as California knotweed, is a flowering plant found on the west coast of the United States. It can be found in various open habitats in Washington, Oregon, and northern and central California. This annual herb has a slender, angled stem and narrow, pointed leaves with fringed stipules. Its white or pink flowers grow in upper leaf axils.

Synonyms Top

Scientific name Authority First published in
Polygonum greenei S.Watson Proc. Amer. Acad. Arts 14: 295 (1879)

Common names Top

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Language Common/alternative name
English california knotweed
Arabic بطباط كاليفورني

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Germination/Propagation Top

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Distribution (via POWO/KEW) Top

Legend for the distribution data:
- Doubtful data
- Extinct
- Introduced
- Native
  • Northern America
    • Northwestern U.S.A.
      • Oregon
    • Southwestern U.S.A.
      • California

Links to other databases Top

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Database ID/link to page
World Flora Online wfo-0001101024
USDA Plants POCA7
Tropicos 26000841
KEW urn:lsid:ipni.org:names:695513-1
The Plant List tro-26000841
Open Tree Of Life 3943771
Nature Serve 2.160057
IPNI 695513-1
iNaturalist 78681
GBIF 5334309
Freebase /m/0bh95x1
EOL 585398
Calflora (Californian flora) 6743
Wikipedia Polygonum_californicum

Genomes (via NCBI) Top

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