Taxon  Report   11634    
Elymus caput-medusae  L.
Medusa head
Elymus caput-medusae
© 2011 Steve Matson
Photos from
CalPhotos / Calflora
Elymus caput-medusae
© 2011 Steve Matson
Elymus caput-medusae
© 2010 Zoya Akulova
Elymus caput-medusae, a monocot, is an annual grass that is not native to California; it was introduced from elsewhere and naturalized in the wild. Cal-IPC rating: High

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Elymus caput-medusae
© 2008 Keir Morse
Family: POACEAE  
Genus: Elymus
Communities: weed, characteristic of disturbed places
Name Status:
Accepted by JEF

PLANTS accepted name:
Taeniatherum caput-medusae

Alternate Names:
ICPN: Taeniatherum asperum
ICPN: Taeniatherum caput-medusae
More information about  Elymus caput-medusae
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria


Search (Flora of North America)

website references from Google

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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Dec 18, 2018).