#horticulture terms

• Atripurpureum — A Latin specific epithet used in botanical nomenclature (in the neuter form) to describe plants, varieties, or cultivars that have dark purple, almost black leaves, flowers, or stems. This structural term serves for the taxonomic differentiation of those taxa that exhibit a massive accumulation of anthocyanin pigments in their outer tissues.
• Atropunicea — A Latin specific epithet used in international botanical nomenclature (in the feminine form) to designate plants, flowers, or plant varieties that possess a dark red-purple, intense, or crimson-blood color. This descriptive term serves as a structural indicator in taxonomy to differentiate specimens with a high level of natural anthocyanin pigments from the typical forms of the species.
• Atrorubens — A Latin specific epithet with a single ending used in botanical and zoological nomenclature to describe a species, variety, or plant organ possessing a dark red, blackish-red, or dark ruby-red color. This structural qualifier serves for the precise delimitation of those taxa that display an intense and darkened shade of foliar tissues or petals.