#horticulture

• Ascocentrum ampullaceum — A species of miniature epiphytic orchid native to the mountainous regions of the Himalayas and Southeast Asia, currently taxonomically classified under the genus Vanda (as Vanda ampullacea). It is highly prized by collectors for its dense, compact inflorescences consisting of numerous flowers of an intense pink-magenta color, which typically appear in spring and grow from the axils of the rigid, distichous leaves.
• Ascocentrum miniatum — A species of miniature epiphytic orchid native to Java, Malaysia, the Philippines, and Thailand, recently reclassified as Vanda miniata. It is famous among horticulturists due to its bright orange, extremely vibrant and numerous flowers, grouped in dense racemes that give the plant a flame-like appearance during its blooming period.
• Asparagus plumosus — The synonymous scientific name for Asparagus setaceus, a perennial climbing plant in the Asparagaceae family, native to southern Africa, frequently cultivated as an indoor or greenhouse ornamental plant; it is prized for its extremely fine, delicate, horizontally branched fronds that resemble green feathers, heavily used in floral arrangements.
• Astelia — A genus of perennial, often dioecious and partially epiphytic herbaceous plants in the Asteliaceae family, primarily native to regions of the Southern Hemisphere (New Zealand, Australia, Pacific islands, and South America); characterized by long, sword-shaped leaves arranged in a compact basal rosette, often covered with silvery, velvety hairs, and globally used as ornamental plants due to their architectural exotic appearance.
• Aster x frikartii — The scientific name of a famous perennial garden hybrid aster, obtained by crossing Aster amellus and Aster thomsonii by the Swiss nurseryman Frikart in 1918; it is globally renowned in landscape design for its exceptionally long blooming period (from July to October) and large, bright lavender-blue flower heads featuring a prominent central yellow disc.
• Astilbe — A genus of perennial herbaceous plants in the Saxifragaceae family, native to the damp forests and mountain ravines of East Asia and North America; they are widely cultivated as ornamental shade plants, prized for their elegant, deeply divided fern-like foliage and spectacular flower heads shaped as fluffy, plume-like panicles colored in white, pink, red, or violet.
• Astilbe chinensis — The scientific name of the Chinese astilbe, a perennial herbaceous plant in the Saxifragaceae family, native to damp forests, valleys, and forest edges in China, Japan, Korea, and Eastern Russia; it is extensively cultivated as an ornamental shade plant, recognized by its vigorous creeping rhizomes, deeply divided leaves with serrate margins, and dense, narrow, fluffy plume-like panicles colored in shades of rose-lilac, purple, or white, featuring a higher drought tolerance than other members of the genus.
• Astilbe japonica — The scientific name of the Japanese astilbe, a perennial herbaceous plant in the Saxifragaceae family, native to mountain forests and damp rocky areas in Japan; it is widely cultivated as an ornamental plant, characterized by erect, medium-tall stems, glossy pinnate leaves with reddish stalks, and dense, pyramidal, plume-like panicles with white or pale pink flowers that open in early summer.
• Astilbe thunbergii — A species of herbaceous perennial plant native to the mountainous regions of Japan, belonging to the Saxifragaceae family. It is distinguished by its elegant clumps of deeply incised, pinnate foliage and large, branched panicles of small, starry flowers, typically white or pale pink, blooming in mid-summer and thriving in moist, fertile soils and partially shaded areas.
• Atriplex hortensis — The scientific name of the garden orache, an annual herbaceous plant widely cultivated for its edible green, red, or yellowish leaves, traditionally used in Eastern European gastronomy. This species features a resilient adaptive structure, being rich in vitamins, minerals, and antioxidants, and is valued both as an early spring vegetable and for its depurative therapeutic properties.
• 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.
• Aubrieta — A genus of flowering herbaceous perennial plants in the cabbage family Brassicaceae, native to southern Europe and central Asia, characterized by low, trailing stems that form dense mats of leaves and small, vibrant flowers in shades of purple, pink, or white; commonly known as aubretia. They are highly prized rock garden plants in horticulture due to their drought resistance and spectacular early spring blooms.
• Aucuba — A genus of dioecious evergreen shrubs native to eastern Asia, belonging to the family Garryaceae, widely cultivated as ornamental plants due to their large, leathery leaves, often variegated with yellow spots, and bright red berry-like fruits. The most famous species is Aucuba japonica, prized for its shade tolerance.
• Aucuba japonica — The most well-known species of evergreen shrub in the genus Aucuba, family Garryaceae, native to Japan and China, widely cultivated as an ornamental; Japanese laurel or spotted laurel. It is characterized by large, opposite, leathery, and glossy leaves, frequently variegated with bright yellow spots in cultivated varieties, and decorative red winter berries on female plants.
• Gold-variegated — Feminine singular form of a compound adjective used in botanical and horticultural binomial nomenclature to describe a cultivar or plant variety whose leaves are variegated, mottled, or striped with spots of an intense golden-yellow hue.
• Austrocephalocereus — A genus of succulent plants in the family Cactaceae, native to the arid and rocky regions of Eastern Brazil. These cacti are characterized by columnar, spiny stems and the development of a lateral cephalium (a dense zone of wool and bristles from which nocturnal flowers emerge).