lodicule

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

• noun One of two or three small scales at the base of the ovary in a grass flower, believed to be a rudimentary perianth.

from The Century Dictionary.

• noun In botany, one of the scales which occur in the flowers of some grasses, inserted on the receptacle just outside the stamens. Also called squamula and paleola.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Bot.) One of the two or three delicate membranous scales which are next to the stamens in grasses.

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

• noun botany A small scale at the base of the ovary of a flower of a grass