flowerless

from WordNet (r) 3.0 (2006)

flowerless
    adj 1: without flower or bloom and not producing seeds; "a
           flowerless plant" [syn: {flowerless}, {nonflowering}]
           [ant: {flowering}]

from The Collaborative International Dictionary of English v.0.48

Flowerless \Flow"er*less\, a.
   Having no flowers.
   [1913 Webster]

   {Flowerless plants}, plants which have no true flowers, and
      produce no seeds; cryptogamous plants.
      [1913 Webster]