#agru

• Citrus — An archaic or regional botanical term used to denote a shrub or fruit tree from the Citrus genus, or a sour-bitter fruit belonging to the citrus family; as an adjective, it describes a sharp, sour, or astringent taste characteristic of unripe fruits. In modern taxonomy, the term has been structurally integrated and replaced in common usage by the collective derivative 'citrus'.
• Citrus fruits — A collective name given to fruits of the Citrus genus (lemons, oranges, mandarins, grapefruits, pomelos, limes), characterized by an aromatic rind rich in essential oils and a juicy, segmented pulp with a high content of citric acid and vitamin C. In a broader sense, the term also denotes the orchards or trees producing these fruits specific to warm, subtropical climates.
• Arecastrum — An archaic or synonymic taxonomic genus in the family Arecaceae (Palmae), historically used to classify certain tropical and subtropical palm species from South America, notably the queen palm, modernly reclassified under the genus Syagrus (as Syagrus romanzoffiana). In a structural-botanical sense, the term describes arborescent plants featuring a solitary, smooth, ringed trunk, a rich crown of long pinnate leaves, and branched inflorescences producing yellow fleshy drupe-type spherical fruits.