Taxon  Report   6758 
Polygonum minimum  S. Watson
Broadleaf knotweed,  Leafy dwarf knotweed, Little mountain knotweed
Polygonum minimum
© 2008 Steve Matson
Click on a photo to see it bigger.
Polygonum minimum
© 2011 Steve Matson
Polygonum minimum
© 2012 Steve Matson
Polygonum minimum, a dicot, is an annual herb that is native to California and is also found outside of California, but is confined to western North America.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Polygonum minimum
© 2009 Neal Kramer
Genus: Polygonum
Subalpine Forest, Lodgepole Forest, wetland-riparian
Habitat: streambanks, meadows [Walker]
Wetlands:Usually occurs in wetlands, but occasionally found in non wetlands [U.S. Fish & Wildlife Service.]
Name Status:
Accepted by TJM2 + PLANTS + JM93
More information about  Polygonum minimum
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 26, 2016).

The information on this page comes from diverse sources. None of the links are sponsored.