corn silk

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The styles and stigmas that appear as a silky tuft or tassel at the tip of an ear of corn, used as a diuretic in herbal medicine.

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

• noun each of the long filamentous styles that grow as a silky tuft at the tip of an ear of Indian corn