Calamagrostis
noun
Cal·a·ma·gros·tis
ˌkaləməˈgrästə̇s
: a genus of tall mostly perennial grasses having single-flowered spikelets, the lemmas entire, and the rachillae usually extending beyond the palea into a hairy bristle or stalk see bluejoint sense 1
Word History
Etymology
New Latin, from calam- + Latin agrostis couch grass, from Greek agrōstis dog's-tooth grass, perhaps from agros field