Taxon  Report   6774 
Polygonum shastense  A. Gray
Shasta knotweed
Polygonum shastense
© 2010 Keir Morse
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Polygonum shastense
© 2010 Keir Morse
Polygonum shastense
© 2006 Steve Matson
Polygonum shastense, a dicot, is a perennial herb that is native to California and is also found outside of California, but is confined to western North America.

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Plant Characteristics
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Bloom Period
Polygonum shastense
© 2003 Penn Martin II
Genus: Polygonum
Lodgepole Forest, Subalpine Forest
Distribution by County 

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Name Status:
Accepted by TJM2 + PLANTS + JM93
More information about  Polygonum shastense
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 27, 2016).

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