Onion stalks with bulblets, or miniature onions grown at the top of the stalk.
Scientific classification
Kingdom:
Plantae
Clade:
Tracheophytes
Clade:
Angiosperms
Clade:
Monocots
Order:
Asparagales
Family:
Amaryllidaceae
Subfamily:
Allioideae
Genus:
Allium
Species:
A. × proliferum
Binomial name
Allium × proliferum
(Moench) Schrad. ex Willd.
Synonyms[1]
Allium cepa var. proliferum (Moench) Regel
Allium fistulosum var. viviparum Makino
Allium fistulosum f. viviparum (Makino) M.Hiroe
Allium multitabulatum S. Cicina
Allium multitabulatum S. Cicina
Allium × wakegi Araki
Cepa × prolifera Moench
The tree onion (Allium × proliferum) is a perennial plant similar to the common onion (A. cepa), but with a cluster of bulblets where a normal onion would have flowers. Tree onions are also known as topsetting onions, walking onions, or Egyptian onions. Genomic evidence has conclusively shown that they are a diploid hybrid of the shallot and the Welsh onion (A. fistulosum).[2][3][4] However, some sources may still treat the tree onion as A. cepa var. proliferum or A. cepa Proliferum Group.
Tree onion bulblets will sprout and grow while still on the original stalk. The bulblets are usually marble-sized, between 0.5 cm to 3 cm in diameter. They may bend down under the weight of the new growth and take root some distance from the parent plant, giving rise to the name "walking onion". It has been postulated that the name "Egyptian onion" derived from Romani people[5] bringing tree onions to Europe from the Indian subcontinent.
The phenomenon of forming bulblets (bulbils) instead of flowers is also seen in top-setting garlic and other alliums, which sometimes may also be referred to as top onions or tree onions.[6]
Also known as turfed stone leek, it may be cultivated commercially and for foliage.[7][8] It is described as a shallot which can be grown in tropical conditions.[9]
Many tree onions are very strong flavoured, although some cultivars are relatively mild and sweet.[5] The underground bulbs are particularly tough-skinned and pungent,[10] and can be quite elongate, like leeks,[10] or in some types may form bulbs up to 5 cm across.[5] Young plants may be used as scallions in the spring, and the bulblets may be used in cooking similarly to regular onions, or preserved by pickling.[10]
^"Allium ×proliferum". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew – via The Plant List. Note that this website has been superseded by World Flora Online
^Friesen, N. & M. Klaas (1998). "Origin of some vegetatively propagated Allium crops studied with RAPD and GISH". Genetic Resources and Crop Evolution. 45 (6): 511–523. doi:10.1023/A:1008647700251. S2CID 26205471.
^Yamashita, Kenichiro; Tashiro, Yosuke (2001). "RFLP Analysis of Mitochondrial DNA in Wakegi Onion". Engei Gakkai Zasshi. 70 (2): 232–234. doi:10.2503/jjshs.70.232.
^James L. Brewster (1 January 2008). Onions and Other Vegetable Alliums. CABI. pp. 152–3. ISBN 978-1-84593-622-8.
^ abcRuttle, Jack. "Confessions of an Onion Addict". National Gardening Association. Retrieved 17 February 2011.
^"Allium | Piedmont Master Gardeners". A few alliums, such as A. roseum and A. sphaerocephalon produce aerial bulbils in the flower head.
^Haim D. Rabinowitch; Lesley Currah (2002). Allium Crop Science: Recent Advances. CABI. pp. 87–8. ISBN 978-0-85199-510-6.
^Vincent E. Rubatzky; Mas Yamaguchi (6 December 2012). World Vegetables: Principles, Production, and Nutritive Values. Springer Science & Business Media. pp. 307–8. ISBN 978-1-4615-6015-9.
^Jaime Prohens-Tomás; Fernando Nuez (6 December 2007). Vegetables II: Fabaceae, Liliaceae, Solanaceae, and Umbelliferae. Springer Science & Business Media. pp. 124, 152. ISBN 978-0-387-74110-9.
^ abcChandoha, Walter. "Egyptian Onions are the Easiest" (PDF). Cornell University Cooperative Extension. Retrieved 26 April 2011.
The treeonion (Allium × proliferum) is a perennial plant similar to the common onion (A. cepa), but with a cluster of bulblets where a normal onion would...
as onions and cultivated for food, such as the Japanese bunching onion Allium fistulosum, the treeonion Allium × proliferum, and the Canada onion Allium...
fistulosum, the Welsh onion, also commonly called bunching onion, long green onion, Japanese bunching onion, and spring onion, is a species of perennial...
flowers (which is a form of apomixis). The so-called treeonion (Allium × proliferum) forms small onions which are large enough for pickling.[citation needed]...
(파, scallion, spring/green onion) daepa (대파, Asian leek) jjokpa (쪽파, treeonion) silpa (실파, young scallion) padeudeuknamul (파드득나물, East Asian wildparsley)...
can form many bulbils in the flowerhead; in the so-called "treeonion" or Egyptian onion (A. × proliferum) the bulbils are few, but large enough to be...
Mother Earth News. Retrieved 8 July 2014. Also known as the Egyptian Walking Onion due to its ability spread easily to other parts of gardens. "Everyday Mysteries:...
plants native to eastern North America Owenia cepiodora, a tree native to Australia with onion-scented wood This page is an index of articles on plant species...
Onion cake is a savory or sweet cake prepared using onion as a primary ingredient. Various onion cakes are consumed in Canada, China, Germany, Korea, Switzerland...
thoroughly with a sauce made of palm oil, ụgba (seed of the oil bean tree), onions, fresh pepper, and salt. Igbo cuisine List of African dishes "Ugba:...
Allium giganteum, common name giant onion, is an Asian species of onion, native to central and southwestern Asia but cultivated in many countries as a...
three-cornered leek or three-cornered garlic, in Australia as angled onion and in New Zealand as onion weed. Both the English name and the specific epithet triquetrum...
ornamental onion, flowering onion, tumbleweed onion and Persian onion, is a species of monocotyledonous flowering plant. It belongs to the onion and garlic...
chinense (also known as Chinese onion, Chinese scallion, glittering chive, Japanese scallion, Kiangsi scallion, and Oriental onion) is an edible species of Allium...
In cryptography and computer science, a hash tree or Merkle tree is a tree in which every "leaf" node is labelled with the cryptographic hash of a data...
The curry tree or Bergera koenigii (syn. Murraya koenigii), is a tropical and sub-tropical tree in the family Rutaceae (the rue family, which includes...
canadensis, a plant pathogen Allium canadense, common name wild onion, meadow garlic, treeonion, and Canadian garlic Amelanchier canadensis, with many common...
A fruit tree is a tree which bears fruit that is consumed or used by animals and humans — all trees that are flowering plants produce fruit, which are...
vegetables) such as deodeok, angelica-tree, gondre and Siberian onion. Having a similar flavor profile to Treeonion, Korean wild chives can be eaten raw...
Allium cernuum, known as nodding onion or lady's leek, is a perennial plant in the genus Allium. It grows in open areas in North America. Allium cernuum...
from trees of Protium copal and Hymenaea courbaril, dammar gum from trees of the family Dipterocarpaceae, dragon's blood from the dragon trees (Dracaena...
Global Information
