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Taxon  Report  
Pseudorontium cyathiferum  (Benth.) Rothm.
Deep canyon snapdragon
Pseudorontium cyathiferum is an annual herb that is native to California, and also found in Baja California; Sonora, Mexico and Arizona.
also called Antirrhinum cyathiferum
California Rare Plant Rank: 2B.3 (rare, threatened, or endangered in CA; common 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
~17 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle
DJJJASONAFMM

Bloom Period
Genus: Pseudorontium
Family: Plantaginaceae  
(Scrophulariaceae)
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Communities: Creosote Bush Scrub
Name Status:
Accepted by JEF + CNPS + PLANTS + POWO
Alternate Names:
JEF + CNPS + PLANTSAntirrhinum cyathiferum
Information about  Pseudorontium cyathiferum from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (PSCY2)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Etymology, Range: Pseudorontium is a genus of flowering plants with one species, Pseudorontium cyathiferum (syn. Antirrhinum cyathiferum), a New World snapdragon known by the common names dog's-mouth and Deep Canyon snapdragon. It is native to the deserts of northern Mexico and adjacent California and Arizona. Previously considered to belong among the New World Antirrhinum species, it is now considered the sole member of the related genus Pseudorontium. (link added by Mary Ann Machi)


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: 05/23/2025).