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, Citrus japonica, to numerous species representing each cultivar. Recent genomic analysis defines three pure species, Citrus hindsii, C. margarita and C. crassifolia, with C. × 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 cultivated predominantly in the Philippines. It is native to the Philippines, parts of Indonesia, Malaysia, and Brunei, as well as parts of southern China and Taiwan.
Solanum pseudocapsicum is a nightshade species with mildly poisonous fruit. It is commonly known as the Jerusalem cherry, Madeira winter cherry, or, ambiguously, "winter cherry". These perennials can be grown decoratively as house plants, but in some areas of South Africa, India, Australia and New Zealand it is regarded as a weed.
Citrus japonica, the round kumquat, Marumi kumquat, or Morgani kumquat, is a species of citrus fruit in the genus Citrus. It was first described by Carl Peter Thunberg in 1780 as Fortunella japonica.
The hybrid elm cultivar Ulmus × hollandica 'Wredei', also known as Ulmus × hollandica 'Dampieri Aurea' and sometimes marketed as Golden Elm, originated as a sport of the cultivar 'Dampieri' at the Alt-Geltow Arboretum, near Potsdam, Germany, in 1875.
Papeda or papaeda is the common name for a group of Citrus species and varieties native to tropical Asia that are hardy and slow-growing, and produce unpalatable fruit. Walter Tennyson Swingle segregated these species into a separate subgenus, Papeda, that included the Ichang lemon, yuzu, kaffir lime, kabosu, sudachi, and a number of wild and uncultivated species and hybrids. Recent genetic analysis shows the papedas to be distributed among distinct branches of the Citrus phylogenetic tree, and hence Swingle's proposed subgenus is polyphyletic and not a valid taxonomic grouping, but the term persists as a common name.
Citrus crassifolia, the Meiwa kumquat, is a species of kumquat; a type of citrus fruit in the genus Citrus, family Rutaceae. It was first described by the American botanist Walter Tennyson Swingle in 1915 as Fortunella crassifolia.
Citrus macroptera, also known as hatkhora or shatkoracabuyao, Melanesian papeda, or wild orange, is a semi-wild species of citrus native to the Sylhet region of Bangladesh.
The kishu mikan is a hybrid variety of mikan, or mandarin orange, found in Southern China and also grown in Japan. It is more closely related to the mandarin orange than the common sweet orange.
The citrangequat is a citrus hybrid of a citrange and a kumquat, developed by Walter Swingle at Eustis, Florida, in 1909. Citrangequats are bitter in taste, but are considered edible by some at the peak of their maturity. Three named cultivars exist:
Clymenia is a small genus of flowering plants in the family Rutaceae with two species. The genus is often included in Citrus.
Hort., in the taxonomy of plants, is an abbreviation used to indicate a name that saw significant use in the horticultural literature, but was never properly published.
Hyuganatsu is a citrus fruit and plant grown in Japan. The name comes from Hyūga, the ancient name of Miyazaki Prefecture in Kyushu, where the citrus is said to have originated, while "natsu" (夏) means summer. Hyūganatsu grown outside Kyushu are sometimes shipped under different names such as Konatsu (小夏), Tosakonatsu (土佐小夏), or New Summer Orange (ニューサマーオレンジ).
Ikuro Takahashi was a Japanese botanist, specializing in citrus, who was hailed as the "father of citrus" especially in his native Shizuoka Prefecture.
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.
The field elm cultivar Ulmus minor'Viminalis Pendula', a weeping form of U. minor 'Viminalis', was first listed c.1890 as Ulmus antarctica pendulaHort., and briefly described, by the Späth nursery of Berlin, which distributed it from the late 19th century. On the continent it was also known as U. campestris antarctica pendula. Maxwell T. Masters in the Journal of the Royal Horticultural Society (1891) listed it as U. viminalis pendula.
Citrus margarita, the oval kumquat or Nagami kumquat, is a species of kumquat; a type of citrus fruit in the genus Citrus, family Rutaceae.
Citrus hindsii, the Hong Kong kumquat, is a species of kumquat; a type of citrus fruit in the genus Citrus, family Rutaceae. This specific name is first published in World Checklist of Seed Plants 3(1): 15 (1999). Recent phylogenetic analysis suggested that C. hindsii is a single 'true' species.
Citrus swinglei, the Malayan kumquat, is a species of kumquat; a type of citrus fruit in the genus Citrus, family Rutaceae. It was first described by Burkill ex Harms in 1931.
