I realize it is still the best source for many things but we need to find a new source -- Hortus Third is dated 1976. A lot has happened in 22 years plus the time it took to put it together, probably another 3 years. A change in the International Code of Nomenclature for Cultivated Plants also occurred in 1995. Hopefully, someone will step up as the Bailey's are no longer around to do another Hortus Fourth.