jetajockey said:A bunch is just that, a group of the same species bunched together and sold as one unit. Something like anacharis or ludwigia is sold in bunches.
Assorted is usually just a label that a store puts on a plant that they don't have an I.D. for, or something they get them in labeled that way. Something like anubias or java fern is sometimes listed as assorted. (i.e. assorted ferns, assorted anubias, etc)