Red Mulberry (Morus rubra) Division - Magnoliaphyta Class - Magnoliopsida Subclass - Hamamelididae Order - Urticales Family - Moraceae Genus - Morus Red mulberry trees are common in Philadelphia, generally due to the fact that their berries are eaten by birds and animals and later defecated elsewhere, effectively spreading the seeds all over. The leaves on mulberry trees are irregular. They can take multiple forms, even on the same branch. Weeds Taxonomic List List by Scientific Name Text Only List by Scientific Name