antrorse

from WordNet (r) 3.0 (2006)

antrorse
    adj 1: bent or curved forward or upward; "a plant having
           antrorse hairs on the stem" [ant: {retrorse}]

from The Collaborative International Dictionary of English v.0.48

Antrorse \An*trorse"\ ([a^]n*tr[^o]rs"), a. [From L. ante +
   versun turned; apparently formed in imitation of retrorse.]
   (Bot.)
   Forward or upward in direction. --Gray.
   [1913 Webster]