The Collaborative International Dictionary of English v.0.48:

stick-tight \stick"-tight`\, n. (Bot.)
   1. any of several plants having seeds tipped with barbs that
      may cling to fur or clothing, especially those of the
      genus Bidens, also called bur marigold,
      beggar-ticks, and Beggar's ticks, which have prickly
      flattened achenes. --RHUD
      [1913 Webster +PJC]

   2. a seed from a sticktight[1].
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Beggar's ticks \Beg"gar's ticks`\
   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.
   [1913 Webster]