Genus: Glyceria — manna grass

Wetland-inhabiting species in the genera Glyceria, Puccinellia, and Torreyochloa can be hard to tell apart. Of the three, only Puccinellia species can grow in saline conditions, it has open leaf sheaths, its upper glumes have 3 veins, and the veins on its lemmas are inconspicuous. Only Glyceria has closed leaf sheaths, its upper glumes have 1 vein, and the veins on the lemmas are conspicuous. Torreyochloa has open leaf sheaths, 3-veined upper glumes, and conspicuous veins on its lemmas. Reference: Barkworth and Anderton (2007).

Family

Poaceae (grass family)

This genus’s species in New England

• Glyceria acutiflora
• Glyceria borealis
• Glyceria canadensis
• Glyceria fluitans
• Glyceria grandis
• Glyceria laxa
• Glyceria maxima
• Glyceria melicaria
• Glyceria obtusa
• Glyceria septentrionalis
• Glyceria striata

Visit this genus in the Dichotomous Key

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