Panicularia obtusa (Muhl.) Kuntze
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Glyceria obtusa (Muhl.) Trin. Coastal mannagrass, Atlantic mannagrass
The original range of this grass is not known, but it is found in eastern North America, especially in coastal areas. Identification: Stems are upright but often prostrate at the base, 20-39" (50-100 cm) tall, growing in wet soil or shallow standing water. Grass blades are up to 12" (30 cm) and ¹/₁₆-⅛" (2-6 mm) wide, rough on the upper surface. Flowering tops, or panicles, are 1¾-6" (5-15 cm) long, and very dense, a key identifying feature. Each flower contains 4-7 green spikelets ⅛-³/₁₆" (4-6 mm) long. Coastal mannagrass blooms June through August. References:
Online References:
The U.S. Geological Survey's Northern Prairie Wildlife Research Center The Lady Bird Johnson Wildflower Center
9/20/2009 · Wild Gardens of Acadia, Acadia National Park, Bar Harbor, Maine
9/20/2009 · Wild Gardens of Acadia, Acadia National Park, Bar Harbor, Maine Glyceria obtusa description by Thomas H. Kent, last updated 25 May 2020.
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9/16/2016 · Sieur de Monts Botanical Gardens, Bar Harbor, Maine
9/20/2009 · Wild Gardens of Acadia, Acadia National Park, Bar Harbor, Maine
9/16/2016 · Sieur de Monts Botanical Gardens, Bar Harbor, Maine Range:
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