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Encyclopedia > Trifoliate orange
?Trifoliate Orange

Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Sapindales
Family: Rutaceae
Genus: Poncirus
Species: P. trifoliata
Binomial name
Poncirus trifoliata
(L.) Raf.

Trifoliate Orange (Poncirus trifoliata) is a member of the family Rutaceae, closely related to Citrus, and sometimes included in that genus, being sufficiently closely related to allow it to be used as a rootstock for Citrus. It differs from Citrus in having deciduous, compound leaves, and pubescent (downy) fruit. It is native to northern China and Korea, and is also known as the Chinese Bitter Orange. Image File history File links Poncirus_trifoliata1. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also called angiosperms) are a major group of land plants. ... Young castor oil plant showing its prominent two embryonic leaves (cotyledons), that differ from the adult leaves An example of a trimerous and non-eudicot flower: Magnolia Dicotyledons or dicots are a group of flowering plants whose seed typically contains two embryonic leaves or cotyledons. ... Families See text Sapindales is a botanical name for an order of flowering plants. ... Genera About 160 genera; selected important genera: Amyris - West Indian Sandalwood Choisya - Mexican orange Citrus - Citrus Dictamnus - Burning-bush Fortunella - Kumquat Melicope - Corkwood, Alani Murraya - Curry tree Phellodendron - Cork-trees Poncirus - Trifoliate orange Ptelea - Hoptree Ruta - Rue Skimmia - Skimmia Tetradium (Euodia) - Euodias Zanthoxylum - Toothache trees Rutaceae is a family of... In biology, binomial nomenclature is the formal method of naming species. ... Carolus Linnaeus Carl Linnaeus, also known after his ennoblement as , (May 23, 1707 – January 10, 1778), was a Swedish botanist, physician and zoologist[1] who laid the foundations for the modern scheme of nomenclature. ... C. S. Rafinesque Constantine Samuel Rafinesque-Schmaltz (October 22, 1783-September 18, 1840) was a nineteenth-century polymath who led a chaotic life. ... Genera About 160 genera; selected important genera: Amyris - West Indian Sandalwood Choisya - Mexican orange Citrus - Citrus Dictamnus - Burning-bush Fortunella - Kumquat Melicope - Corkwood, Alani Murraya - Curry tree Phellodendron - Cork-trees Poncirus - Trifoliate orange Ptelea - Hoptree Ruta - Rue Skimmia - Skimmia Tetradium (Euodia) - Euodias Zanthoxylum - Toothache trees Rutaceae is a family of... Species & major hybrids Species Citrus maxima- Pomelo Citrus medica- Citron Citrus reticulata- Mandarin & Tangerine Major hybrids Citrus × sinensis- Sweet Orange Citrus × aurantium- Bitter Orange Citrus × paradisi- Grapefruit Citrus × limon- Lemon Citrus × latifolia- Persian lime Citrus × aurantifolia- Key lime See also main text for other hybrids Citrus is a common term... Grafting is a method of plant propagation by which one woody plant is mechanically attached to another so that the two eventually fuse together. ... The leaves of a Beech tree A leaf with laminar structure and pinnate venation In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ... Korea (Korean: (조선 or 한국, see below) is a geographic area, civilization, and former state situated on the Korean Peninsula in East Asia. ...


The plant is fairly hardy (USDA zone 5) and will tolerate moderate frost and snow, making a large shrub or small tree 4-8 m tall. Because of the relative hardiness of Poncirus, citrus grafted onto it are usually hardier than when grown on their own roots. Plant Hardiness Zone Map Temperature scale of hardiness zones, showing the average annual minimum temperature boundaries for the zones USDA Plant Hardiness Zones are areas in North America categorized according to their lowest winter temperatures. ... A broom shrub in flower A shrub or bush is a horticultural rather than strictly botanical category of woody plant, distinguished from a tree by its multiple stems and lower height, usually less than 6 m tall. ... The coniferous Coast Redwood, the tallest tree species on earth. ...


Poncirus is recognisable by the large 3-5 cm spines on the shoots, and its deciduous leaves with three (rarely five) leaflets, typically with the middle leaflet 3-5 cm long, and the two side leaflets 2-3 cm long. The flowers are white, with pink stamens, 3-5 cm diameter, larger than those of true citrus but otherwise closely resembling them, except that the scent is much less pronounced than with true citrus. As with true citrus, the leaves give off a spicy smell when crushed.


The fruits are green, ripening to yellow, and 3-4 cm diameter, resembling a small orange, but with a finely downy surface. They are very bitter, not edible fresh, but can be made into marmalade, and when dried and powdered, they can be used as a condiment. Fruit stall in Barcelona, Spain. ... Orange—specifically, sweet orange—refers to the citrus tree Citrus sinensis (syn. ... Marmalade is a sweet conserve made from fruit, sugar, and (usually) a gelling agent. ...

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Poncirus trifoliata

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