amplexicaul

from The Collaborative International Dictionary of English v.0.48

Amplexicaul \Am*plex"i*caul\, a. [L. amplexus, p. p. of amplecti
   to encircle, to embrace + caulis stem: cf. F. amplexicaule.]
   (Bot.)
   Clasping or embracing a stem, as the base of some leaves.
   --Gray.
   [1913 Webster]