Chorizanthe polygonoides Calflora

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Taxon Report

Chorizanthe polygonoides Torr. & A. Gray

Knotweed spineflower

2017 R.A. Chasey

2018 David popp

2023 Aaron Echols

2022 Robert Steers

2018 Hunter Breck

2023 R.A. Chasey

2023 Aaron Echols

Chorizanthe polygonoides is an annual herb that is native to California, and endemic (limited) to California.


	Plant Range Observation Search ~518 records in California Plant Characteristics

Bloom Period

Photos on Calflora


Subspecies and Varieties:
... var. longispina ... var. polygonoides
Genus:	Chorizanthe
Family:	Polygonaceae
Category:	angiosperm
PLANTS group:	Dicot
Jepson eFlora section: eudicot

Communities: Yellow Pine Forest, Foothill Woodland, Chaparral, Valley Grassland, many plant communities

Name Status:
Accepted by JEF + PLANTS + POWO

Information about Chorizanthe polygonoides from other sources


Nursery availability from CNPLX Commercial availability unknown. Jepson eFlora USDA PLANTS Profile (CHPO4) Photos on Calflora Photos on CalPhotos Google Images Photos on iNaturalist ID Tips on PlantID.net	ITIS Original Publication citation International Plants Names Index Search efloras.org (Flora of North America) Landscape information from Calscape BONAP Distribution Map Consortium of California Herbaria 2 Search the Native American Ethnobotany Database	Add an Observation Location Suitability Planting Guide Distribution by County
photos / record / common / links

Suggested Citation

Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/ (Accessed: 05/19/2025).