beggar's ticks

from The Century Dictionary.

• noun Same as beggar's-lice, 2. Also written beggarticks.

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

• The bur marigold (Bidens) and its achenes, which are armed with barbed awns, and adhere to clothing and fleeces with unpleasant tenacity; -- also called beggar-ticks.

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

• noun The bur marigold and its achenes, which are armed with barbed awns that adhere to clothing.

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

• noun any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing