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Taxon  Report  
Oxytheca watsonii  Torr. & A. Gray
Watson's oxytheca
Oxytheca watsonii is an annual herb that is native to California, and also found in Nevada.
California Rare Plant Rank: 2B.2 (rare, threatened, or endangered in CA; common elsewhere).   CNDDB
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
(43 records)
one or more occurrences
within a 7.5-minute quadrangle

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

Communities: Creosote Bush Scrub, Joshua Tree Woodland, wetland-riparian
Name Status:
Accepted by JEF + CNPS + PLANTS
Alternate Names:
JEFEriogonum cuspidatum
JEFAcanthoscyphus parishii var. goodmaniana
Information about  Oxytheca watsonii from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (OXWA)

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Google Images

Photos on iNaturalist

ID Tips on PlantID.net


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]. 2022. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/02/2022).