Sessile /(?)/

Ses·sile

Sessile

a.
  1. Attached without any sensible projecting support.
  2. Resting directly upon the main stem or branch, without a petiole or footstalk; as, a sessile leaf or blossom. (Bot.)
  3. Permanently attached; -- said of the gonophores of certain hydroids which never became detached. (Zool.)