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Taxon  Report  
Sidotheca emarginata  (H. M. Hall) Reveal
White margined oxytheca
Sidotheca emarginata is an annual herb that is native to California, and endemic (limited) to California.
also called Oxytheca emarginata
California Rare Plant Rank: 1B.3 (rare, threatened, or endangered in CA and elsewhere).
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
Observation Search
(99 records)
yellowone or more occurrences
within a 7.5-minute quadrangle
bloom graphic
Bloom Period
Genus: Sidotheca
Family: Polygonaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Yellow Pine Forest, Pinyon-Juniper Woodland
Name Status:
Accepted by JEF + CNPS
Alternate Names:
JEFEriogonum emarginatum
JEF + CNPSOxytheca emarginata
Information about  Sidotheca emarginata 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]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 06/01/2023).