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flote grass

British  
/ fləʊt /

noun

  1. an aquatic perennial grass, Glyceria fluitans , whose metre-long stems and pale green leaves are often seen floating in still or sluggish water. The related sweet grass ( G. plicata ) has broader, darker leaves and owes its name to the fact that cattle like to eat it

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of flote grass

C16: flote obsolete spelling of float