logo Calflora, a 501c3 non-profit
Taxon  Report  
Elymus caput-medusae  L.
Medusa head
Elymus caput-medusae is an annual grasslike herb that is not native to California.
Cal-IPC rating: high
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
(6960 records)
redone or more occurrences
within a 7.5-minute quadrangle
bloom graphic
Bloom Period
Genus: Elymus
Family: Poaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Communities: weed, characteristic of disturbed places
Name Status:
Accepted by JEF
Alternate Names:
JEFTaeniatherum asperum
JEFTaeniatherum caput-medusae
PLANTSTaeniatherum caput-medusae
Information about  Elymus caput-medusae from other sources

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]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 01/27/2023).