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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Polygonum hickmanii

Polygonum hickmanii H. Hinds & R. Morgan

Hickman's Knotweed, Scotts Valley Polygonum

Polygonaceae (Buckwheat family)

Synonym(s):

USDA Symbol: POHI14

USDA Native Status: L48 (N)

 

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Plant Characteristics

Duration: Annual
Habit: Herb
Fruit Type: Achene
Size Notes: Often cushion-like, up to about 2 inches tall.

Bloom Information

Bloom Color: White , Pink
Bloom Time: May , Jun , Jul , Aug , Sep , Oct
Bloom Notes: White with whitish or pink margins.

Distribution

USA: CA
Native Distribution: Listed as endangered in the United States.
Native Habitat: Open, seasonally dry grasslands.

U.S. Fish & Wildlife Service Threatened & Endangered Status

USFWS Species Profile: Q3HV
Status: Endangered
Historic Range: U.S.A. (CA)
Critical Habitat: 17.96(a)
Special Rules: N/A
This information is derived from the U.S. Fish & Wildlife Serrvice Environmental Conservation Online System.

Web Reference

Webref 30 - Calflora (2018) Calflora
Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Polygonum hickmanii in USDA Plants
FNA: Find Polygonum hickmanii in the Flora of North America (if available)
Google: Search Google for Polygonum hickmanii

Metadata

Record Modified: 2020-11-12
Research By: CBR

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