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. Dracaena (plant): Dracaena ( , derived from the romanized form of the Ancient Greek δράκαινα – "drakaina", "female dragon", is a genus of about 120 species of trees and succulent shrubs.
trees