Native Plants
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Glyceria grandis var. grandis
Glyceria grandis S. Watson var. grandis
American Mannagrass
Poaceae (Grass Family)
Synonym(s): Glyceria maxima ssp. grandis, Glyceria maxima var. americana, Panicularia grandis
USDA Symbol: GLGRG
USDA Native Status: L48 (N), AK (N), CAN (N), SPM (N)
From the Image Gallery
No images of this plant
Plant Characteristics
Duration: PerennialHabit: Grass/Grass-like
Root Type: Fibrous
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Venation: Parallel
Inflorescence: Panicle
Fruit Type: Caryopsis
Size Notes: Up to about 6 feet tall.
Bloom Information
Bloom Color: Green , BrownBloom Time: Jun , Jul , Aug
Bloom Notes: Flowers inconspicuous. Bloom color refers to spikelets. Bloom time refers to fruiting period.
Distribution
USA: AK , AZ , CA , CO , CT , IA , ID , IL , IN , MA , MD , ME , MI , MN , MS , MT , ND , NE , NH , NJ , NM , NV , NY , OH , OR , PA , RI , SD , TN , UT , VA , VT , WA , WI , WV , WYCanada: AB , BC , MB , NB , NL , NS , NT , ON , PE , QC , SK , YT
Web Reference
Webref 62 - Burke Herbarium Image Collection (2020) University of WashingtonWebref 30 - Calflora (2018) Calflora
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Glyceria grandis var. grandis in USDA PlantsFNA: Find Glyceria grandis var. grandis in the Flora of North America (if available)
Google: Search Google for Glyceria grandis var. grandis
Metadata
Record Modified: 2023-06-06Research By: TWC Staff