lizard's tail

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

• noun (Bot.) A perennial plant of the genus Saururus (Saururus cernuus), growing in marshes, and having white flowers crowded in a slender terminal spike, somewhat resembling in form a lizard's tail; whence the name.

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

• noun Houttuynia cordata, a flowering plant.

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

• noun North American herbaceous perennial of wet places having slender curled racemes of small white flowers