Although many cross-genera hybrids have been made using standard pollination techniques, they generally require at least a near relationship of the plant families. Three common ones of this type are Fatshedera (cross of fatsia and ivy (hedera)), chitalpa (cross of catalpa and desert willow), and pardancanda (cross of pardanthopsis and belamcanda). Wider crosses have been made by gene splicing(high-tech) and tissue culture( also high-tech) this later technique produces most often chimerial plants. Grafting occasionally also produces a chimerial cross at the graft union as the callus tissues sometimes mix, but these are rarely stable. Most grafted plants are still two seperate plants coexisting.

George