Taxon  Report   6764 
Polygonum persicaria  L.  (not an active name; please see Persicaria maculosa)
Lady's thumb,  Spotted ladysthumb

Polygonum persicaria
© 2004 Carol W. Witham
Polygonum persicaria, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

 Interactive Distribution Map 

 Observation Hotline 
 (observation details + photos)

point, line, or polygon

 Plant Characteristics
 and Associations

Bloom Period
Polygonum persicaria
© 2007 Neal Kramer
Genus: Polygonum
weed, characteristic of disturbed places, wetland-riparian
Habitat: disturbed [Walker]
Wetlands:Usually occurs in wetlands, but occasionally found in non wetlands [U.S. Fish & Wildlife Service.]
Distribution by County 

Add an Observation of  Polygonum persicaria

Name Status:
Accepted by PLANTS + JM93
TJM2 accepted name: Persicaria maculosa
Alternate Names:
(according to)

PLANTS: Persicaria maculata
PLANTS: Polygonum persicaria var. ruderale
PLANTS: Polygonum persicaria var. angustifolium
PLANTS: Polygonum minus
PLANTS: Polygonum minus var. subcontinuum
PLANTS: Polygonum fusiforme
PLANTS: Polygonum dubium
PLANTS: Persicaria vulgaris
PLANTS: Persicaria ruderalis
PLANTS: Persicaria ruderalis var. vulgaris
PLANTS: Persicaria puritanorum
PLANTS: Persicaria persicaria
PLANTS: Polygonum puritanorum
 NOTE: Polygonum persicaria is not an active name in the Calflora species table.
 More information about  Polygonum persicaria

Photos on CalPhotos / Google Images

website references on Google

UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Records from the Consortium of California Herbaria

Original Publication citation. on the
International Plants Names Index

Search (Flora of North America)

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]. 2015. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Nov 30, 2015).

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

News About Calflora Home
Calflora  -  1700 Shattuck Avenue   #198,   Berkeley, CA   94709  -  510 883-3148  -  CONTACT