Ostrya and Dracaena, are a genus of what?
Ostrya Ostrya is a genus of eight to 10 small deciduous trees belonging to the birch family Betulaceae. Its common name is hophornbeam in American English and hop-hornbeam in British English. It may also be called ironwood, a name shared with a number of other plants.
Cephena Cephena is a genus of moths of the Noctuidae family.