Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Sharp-scaled Manna-grass
Glyceria acutiflora
Family: Poaceae

Protection Status:
State Status:  E
USFWS Status: {null}

Global Rank: G5
State Rank: S1S2

Shallow water and wet mucky soils in mountain ponds, wet pastures (Weakley 1998); muddy pools and pond margins.

Species Description:
Perennial herb.

Flowering Period: Early June to late July.

Additional Information at NatureServe

Diagnostic Characteristics:
To distinguish from other Glyceria, use the following characters: Spikelets linear-cylindric and 2-4 cm, lemmas acute (not blunt) and the palea projecting more than 1mm beyond it. The plant culms are often rooting from the lower nodes, branches erect and strongly flattened. Plants associated with shallow water or very wet soil. The leaves 3-6 mm wide with closed sheaths, and flat to folded blades. Glumes are unequal and shorter than the lemmas, 1-veined, and the lemmas lanceolate acute and scabrous, palea acuminate and 2 toothed.

Avoid changes in moisture/hydrologic conditions at the site. Changes could result from overstory removal, stream/wetland alteration or impacts due to erosion.

Global Range:

Known Kentucky Occurrences:

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Data last updated: Wednesday, May 28, 2014
Kentucky State Nature Preserves Commission
801 Teton Trail
Frankfort,KY 40601
Phone: (502) 573-2886
Fax: (502) 573-2355
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