απέταλος

Etymology
Either, attested since 1873, from with change to πεταλ- from Or <  +  from, Morphologically,  +  + suffix for adjectives. Or, related to the unattested. For the taxonomic term see the New Latin apetala (example, Nestegis apetala.

Adjective

 * 1)  unpetalled, without blossom
 * 2)  unshoed, unshod