Hort., in the taxonomy of plants, is an abbreviation used to indicate a name that saw significant use in the horticultural literature (usually of the 19th century and earlier), but was never properly published. ==Origins and usage== `Hort.,` short for Hortulanorum, was proposed in order that a non-wild, cultivated plants known and described in a..... Found on http://en.wikipedia.org/wiki/Hort.