papilionaceous

adjective3

1. •
   Having a corolla in the form of a butterfly, with prominent wing-like petals; (generally) pertaining to the Faboidea (Papilionoidea) family of plants.
2. •
   (figurative) Like a butterfly; showy; capricious.

   • Ali G was a glorious, comedic butterfly, but it's my sad duty to report that his exquisitely papilionaceous character is currently being broken upon a wheel. — 2000
3. •
   (no longer used) Pertaining to a butterfly or butterflies.

   • Thefe are alfo called by Reaumur Papillionaceous Flies, that have their wings half tranfparent. — 1792