Definition of manna grass
: any of a genus (Glyceria) of chiefly North American perennial grasses of wetland or aquatic habitats
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“Manna grass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/manna%20grass. Accessed 21 May. 2022.
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Time Traveler for manna grass
The first known use of manna grass was in 1759
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