plume grass

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun botany A kind of grass (Erianthus saccharoides) with the spikelets arranged in great silky plumes, growing in swamps in the Southern United States.
• noun botany The still finer Erianthus Ravennae from the Mediterranean region. The name is sometimes extended to the whole genus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a reedlike grass of the genus Erianthus having large plumes