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Grex (horticulture)

Not to be confused with Grex (biology), a mass of single-celled amoebae.
Look up grex in Wiktionary, the free dictionary.
× Lycamerlycaste Hera gx is a grex of orchid hybrids in the nothogenus × Lycamerlycaste J.M.H.Shaw. It consists of hybrids between members of a grex (× Lycamerlycaste Brugensis gx) and a species (Lycaste cruenta Lindl.).

The term grex (plural greges or grexes; abbreviation gx), derived from the Latin noun grex, gregis, meaning 'flock', has been expanded in botanical nomenclature to describe hybrids of orchids, based solely on their parentage.[1] Grex names are one of the three categories of plant names governed by the International Code of Nomenclature for Cultivated Plants; within a grex the cultivar group category can be used to refer to plants by their shared characteristics (rather than by their parentage), and individual orchid plants can be selected (and propagated) and named as cultivars.[2][3]

  1. ^ (Brickell et al. 2009, Article 4.1)
  2. ^ (Brickell et al. 2009, p. x)
  3. ^ HORTAX: Cultivated Plant Taxonomy Group, archived from the original on 17 August 2016, retrieved 30 July 2016

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