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Sidotheca trilobata  (A. Gray) Reveal
Three lobed oxytheca
© 2017 Fred Melgert / Carla Hoegen
© 2019 Ron Vanderhoff
© 2023 Martin Schenker
© 2020 Matt Berger
© 2019 Ron Vanderhoff
© 2019 Matt Berger
© 2020 Matt Berger
© 2019 Ron Vanderhoff
© 2019 Rebecca E. Crowe
Sidotheca trilobata is an annual herb that is native to California, and found only slightly beyond California borders.
also called Oxytheca trilobata
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Sidotheca
Family: Polygonaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Yellow Pine Forest, Chaparral
Name Status:
Accepted by JEF + POWO
Alternate Names:
JEFEriogonum trilobatum
JEFOxytheca trilobata
Information about  Sidotheca trilobata from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

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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: 05/14/2025).