Kumquats, or cumquats in Australian English, are a group of small, angiosperm, fruit-bearing trees in the family Rutaceae. Their taxonomy is disputed. They were previously classified as forming the now-historical genus Fortunella or placed within Citrus, sensu lato. Different classifications have alternatively assigned them to anywhere from a single species, C. japonica, to numerous species representing each cultivar. Recent genomic analysis defines three pure species, Citrus hindsii, C. margarita and C. crassifolia, with C. x japonica being a hybrid of the last two.
Citrus is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes. The genus Citrus is native to South Asia, East Asia, Southeast Asia, Melanesia, and Australia. Various citrus species have been used and domesticated by indigenous cultures in these areas since ancient times. From there its cultivation spread into Micronesia and Polynesia by the Austronesian expansion ; and to the Middle East and the Mediterranean via the incense trade route, and onwards to Europe and the Americas.
Calamansi, also known as kalamansi, calamondin, Philippine lime, or Philippine lemon, is an economically important citrus hybrid predominantly cultivated in the Philippines. It is native to the Philippines, parts of Indonesia, Malaysia, and Brunei, as well as parts of southern China and Taiwan.
The Rutaceae is a family, commonly known as the rue or citrus family, of flowering plants, usually placed in the order Sapindales.
The trifoliate orange, Citrus trifoliata, is a member of the family Rutaceae. Whether the trifoliate oranges should be considered to belong to their own genus, Poncirus, or be included in the genus Citrus is debated. The species is unusual among citrus for having deciduous, compound leaves and pubescent (downy) fruit.
Murraya is a genus of flowering plants in the citrus family, Rutaceae. It is distributed in Asia, Australia, and the Pacific Islands. The center of diversity is in southern China and Southeast Asia. When broadly circumscribed, the genus has about 17 species. A narrower circumscription contains only eight species, others being placed in Bergera and Merrillia.
Glycosmis is a genus of flowering plants in the citrus family, Rutaceae and tribe Clauseneae. It is in the subfamily Aurantioideae, which also includes genus Citrus. It is a genus of the subtribe Clauseninae, which are known technically as the remote citroid fruit trees.
Citrus oxanthera, synonym Oxanthera aurantium, is a species of plant in the family Rutaceae. Sometimes referred to commonly as the orange-flowered oxanthera, it is endemic to New Caledonia.
The false oranges are a group of flowering plants in the Citrus genus, within the family, Rutaceae. They are endemic to New Caledonia.
Oxanthera brevipes is a species of plant in the family Rutaceae. It is endemic to New Caledonia. It was proposed as a novel species by Benjamin C. Stone based on two specimens, distinguished from other false oranges by a non-articulated petiole. The genus Oxanthera has been synonymized with Citrus, but a name in Citrus does not appear to have been published, and Plants of the World Online regards "Oxanthera brevipes" as an unplaced name.
Citrus neocaledonica, synonym Oxanthera neocaledonica, the large leaf oxanthera, is a species of plant in the family Rutaceae. It is endemic to New Caledonia.
Pleiospermium is a genus of plant in family Rutaceae.
Aurantioideae is the subfamily within the rue and citrus family (Rutaceae) that contains the citrus. The subfamily's center of diversity is in the monsoon region of eastern Australasia, extending west through South Asia into Africa, and eastwards into Polynesia.
Citrofortunella are a large group of commercial hybrids that cross the kumquat with other citrus. In the system of citrus taxonomy established by Swingle, kumquats were placed in a different genus, Fortunella, from Citrus, which included citron, mandarin orange, pomelo and papedas. The result of genetic crosses between kumquats and these other citrus would then be intergeneric hybrids, so a novel genus name was coined for them in 1975, by compounding the names of the contributing genera to form Citrofortunella. That the genus is of a hybrid nature is represented by a multiplication sign before the genus name, for example × Citrofortunella microcarpa. Recent phylogenetic work has shown kumquats to fall within Citrus rather than belonging to a distinct genus, meaning these would no longer be considered intergeneric hybrids, and use of Citrofortunella as a distinct genus name for these hybrids loses taxonomic validity. All would be placed instead within Citrus.
Zanthoxylum asiaticum is a species of plant in the family Rutaceae. Under its synonym Toddalia asiatica, it was the only species in the monotypic genus Toddalia, now included in Zanthoxylum. It is known by the English name orange climber.
Clymenia is a small genus of flowering plants in the family Rutaceae with two species. The genus is often included in Citrus.
Citrus taxonomy refers to the botanical classification of the species, varieties, cultivars, and graft hybrids within the genus Citrus and related genera, found in cultivation and in the wild.
Atalantia is a genus of flowering plants in the citrus family, the Rutaceae.
Comptonella is a plant genus endemic to New Caledonia in the family Rutaceae. Molecular phylogenetic analyses suggest that this genus is nested in Melicope.
Citrus assamensis, the adajamir or ginger lime, is a species of flowering plant in the family Rutaceae, native to Assam and Bangladesh. It is locally cultivated for its fruit, which give a very sour juice with an aroma reminiscent of ginger or eucalyptus.
