Calflora
Taxon  Report   3928 
Glyceria grandis  S. Watson
American mannagrass
Glyceria grandis
© 2004 Dean Wm. Taylor
More photos from
CalPhotos / Calflora
Glyceria grandis, a monocot, is a perennial grass (rhizomatous) that is native to California and is also found elsewhere in North America and beyond, (questionable).
CNPS Rare Plant Rank: 2B.3 (rare, threatened, or endangered in CA; common elsewhere).   8th Edition

Interactive Distribution Map


Observation Hotline
(observation details + photos)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations



Bloom Period
Glyceria grandis
© 2004 Dean Wm. Taylor
Family: POACEAE  
Genus: Glyceria
Communities:
Freshwater Wetlands, wetland-riparian
Habitat: riparian, streambanks, lake-margins, meadows, bogs/fens, edges
Wetlands: Occurs in wetlands
Name Status:
Accepted by TJM2 + CNPS + PLANTS + JM93
Alternate Names:
(according to)

ICPN: Glyceria grandis var. grandis
More information about  Glyceria grandis
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on PlantID.net

Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)

USDA PLANTS Profile (GLGR)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

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: http://www.calflora.org/   (Accessed: Apr 25, 2018).

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