Taxon  Report   8835 
Polygonum hickmanii  H.R. Hinds & R. Morgan
Hickman's knotweed
Polygonum hickmanii
© 2006 California Department of Fish and Game
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CalPhotos
Polygonum hickmanii, a dicot, is an annual herb that is native to California.
It is included in the CNPS Inventory of Rare and Endangered Plants on list 1B.1 (rare, threatened, or endangered in CA and elsewhere).   7th Edition  /  8th Edition

It is listed by the State of California as Endangered and by the Federal Government as 'Endangered '.

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Polygonum hickmanii
© 2006 California Department of Fish and Game
Family: POLYGONACEAE  
Genus: Polygonum
Distribution by County 

Add an Observation of  Polygonum hickmanii

Name Status:
Accepted by TJM2 + CNPS + PLANTS
 
More information about  Polygonum hickmanii
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

USDA PLANTS Profile (POHI14)

Search efloras.org (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: http://www.calflora.org/   (Accessed: Sep 28, 2016).

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