The Collaborative International Dictionary
Petalous
Petalous \Pet"al*ous\, a. Having petals; petaled; -- opposed to apetalous.
Wiktionary
petalous
a. Having petals.
WordNet
Usage examples of "petalous".
As he emerged from the crawlway the carbide flame opened up into an immense petalous moon-vase of light, revealing the chamber to be much larger than the one he'd just vacated.