The Collaborative International Dictionary of English v.0.48:

Floral \Flo"ral\, a. [L. Floralis belonging to Flora: cf. F.
   floral. See Flora.]
   1. Pertaining to Flora, or to flowers; made of flowers; as,
      floral games, wreaths.
      [1913 Webster]

   2. (Bot.) Containing, or belonging to, a flower; as, a floral
      bud; a floral leaf; floral characters. --Martyn.
      [1913 Webster]

   Floral envelope (Bot.), the calyx and corolla, one or the
      other of which (mostly the corolla) may be wanting.
      [1913 Webster]

WordNet (r) 3.0 (2006):

floral envelope
    n 1: collective term for the outer parts of a flower consisting
         of the calyx and corolla and enclosing the stamens and
         pistils [syn: perianth, chlamys, floral envelope,
         perigone, perigonium]