The Collaborative International Dictionary of English v.0.48:

Radicant \Rad"i*cant\ (r[a^]d"[i^]*kant), a. [L. radicans, p.
   pr.: cf. F. radicant. See Radicate, a.] (Bot.)
   Taking root on, or above, the ground; rooting from the stem,
   as the trumpet creeper and the ivy.
   [1913 Webster]