Petaloideous /(?)/

Pet·al·oid·e·ous

Petaloideous

a.
  1. Having the whole or part of the perianth petaline. (Bot.)

Phrases & Compounds
Petaloideous division
that division of endogenous plants in which the perianth is wholly or partly petaline, embracing the Liliaceæ, Orchidaceæ, Amaryllideæ, etc.