Citrus japonica Thunb. (syn: Atalantia hindsii (Champion ex Bentham) Oliver ex Benth.; Atalantia monophylla Benth. ex Hook. (ambiguous synonym); Citrofortunella madurensis (Lour.) D. Rivera Munez et al.; Citrus aurantium var. japonica (Thunb.) Hook. fil.; Citrus hindsii (Champ. ex Benth.) R. Govaerts; Citrus inermis Roxb.; Citrus japonica crassifolia (Swingle) Hiroe; Citrus japonica hindsii (Swingle) Hiroe; Citrus japonica var. madurensis (Loureiro) Guillaum.; Citrus japonica var. margarita (Loureiro) Guillaum.; Citrus japonica marginata (Lour.) Hiroe; Citrus kinokuni Hort. ex Tanaka; Citrus madurensis Lour.; Citrus microcarpa A. Bunge (ambiguous synonym); Fortunella bawangica C. C. Huang; Fortunella chintou (Swingle) C. C. Huang; Fortunella crassifolia Swingle; Fortunella hindsii (Champ. ex Benth.) Swingle; Fortunella hindsii var. chintou Swingle; Fortunella japonica (Thunb.) Swingle; Fortunella japonica var. margarita (Swingle) Makino; Fortunella margarita (Lour.) Swingle; Fortunella obovata Hort. ex Tanaka; Fortunella venosa (Champ. ex Benth.) C. C. Huang; Sclerostylis hindsii Champ. ex Benth.; Sclerostylis venosa Champ. ex Benth.) as per Catalogue of Life;  
Fortunella japonica (Thunb.) Swingle, J. Washington Acad. Sci. 5:171. 1915 (Syn: (≡) Citrus japonica Thunb. (basionym); (=) Citrus madurensis Lour.) as per GRIN;
 
Citrus japonica Thunb., Nova Acta Regiae Soc. Sci. Upsal. 3: 208 1780. (Syn: Atalantia hindsii (Champ. ex Benth.) Oliv.; × Citrofortunella madurensis (Lour.) D.Rivera & al.; Citrus × aurantium var. globifera Engl.; Citrus × aurantium var. japonica (Thunb.) Hook.f. ………..; Citrus erythrocarpa Hayata; Citrus hindsii (Chapm. ex Benth.) Govaerts; Citrus inermis Roxb.; Citrus japonica var. madurensis (Lour.) Guillaumin .; Citrus kinokuni Yu.Tanaka; Citrus madurensis Lour.; Citrus margarita Lour.; Citrus × nobilis var. inermis (Roxb.) Sagot; Fortunella bawangica C.C.Huang [Invalid]; Fortunella chintou (Swingle) C.C. Huang; Fortunella crassifolia Swingle; Fortunella hindsii (Chapm. ex Benth.) Swingle .; Fortunella japonica (Thunb.) Swingle; Fortunella margarita (Lour.) Swingle; Fortunella obovata Tanaka; Sclerostylis hindsii Champ. ex Benth.; Sclerostylis venosa Champ. ex Benth.) as per The Plant List;
China (S-Anhui, Fujian, Guangdong, SE-Guangxi, Hainan, Hunan, Jiangxi,
Zhejiang), Vietnam, Taiwan (c), Korea (c), Haiti (c), Dominican Republic (c),
Cuba (c), Japan (c), Fiji (c), Cook Isl. (c) (Rarotonga (c)), India (c), Vietnam
(c), Sri Lanka (c), Palau Isl. (c), Burma (c), Nepal (c), Pakistan (c), USA (c)
(California (c)), Mexico (c), Bolivia (c), Trinidad & Tobago (c), Micronesia
(c) (Pohnpei) (c)), Honduras (c)
as per Catalogue of Life;  
 

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Ornamental Oranges for ID : 180711 : AK-1: Taken at a private terrace garden in Pune, Maharashtra on 24/12/2005.
Didn’t taste them….but I’m told they are sour.


I had this miniature orange plant bought from a vendor from Darjeeling. The fruit is very sour even when ripe. The young fruits are used to make achar. I am also waiting for ID.


Could be Fortunella japonica (Citrus japonica / Citrus fortunella)


yes, these are commonly called chinese oranges and are very bitter and sour. but they make a wonderful bitter marmalade and pickle. They are also preserved whole in a brandy and sugar syrup to make delicious liqueur.


I got one of these too last year and though mine is a small plant it already has about 5 fruits on it. I have been looking for it’s ID too and I thought it might be the Calamondin orange. Not sure though.


 

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Rutaceae week: UD7 Ornamental Citrus not otherwise classified: Citrus plants are often used and cared for their Ornamental value…
liked these one summer in a southern California garden….
no labels were present , and the day I photographed them a gardener was not around…
So have labelled them DUBIA…
I am submitting them just for their beauty


I just found some notes… hastily jotted down these fruits were most likely Kumquats…. so not really dubia,


Yes This seems to be the oval kumquat, Fortunella margarita (Lour.) Swingle (syn: Citrus margarita Lour.), Nagami kumquat,

The other type, rounded kumquat is Fortunella japonica, also called marumi kumquat


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Kumquat – California – 281113 – RK : Attachments (7). 1 post by 1 author. 

Citrus japonica – Rutaceae http://en.wikipedia.org/wiki/Kumquat Los Altos – last of US plant series – May-June 2013 – pic of fruit taken – 08/07/13 – & the rest 18/07/13. Late morning. Had thought i would not be present when flowers had opened satisfactorily – decided to try my luck just 1/2 an hr before departure for airport – was delighted to see quite a load of flowers:) The fruit is just over an inch in diameter & can be eaten whole – rind & all!


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Fruits & Vegetables: Citrus var.???_RKC: Commonly available in the market of S. Korea.

I think Citrus sinensis, the orange


Citrus sinensis we get them here too


I hope it is Citrus japonica, Kumquot, looks similar to C. sinensis but fruit is mostly smaller than 2.5 cm, mostly 3-4 chambered. 

 

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Citrus japonica from Delhi, Kumquot : 2 posts by 2 authors. Attachments (2)
This is to add to the images shared earlier by … from China.
Citrus japonica, Kumquot, a small tree or shrub easily differentiated by its small fruits mostly smaller than 2 cm, 3-4 chambered, rarely up to 6-chambered, grown as ornamental. Clicked from Delhi. 


 

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Citrus Fruits for ID : Lalbagh, Bangalore : 180518 : AK-12 : 20 posts by 6 authors. Attachments (6)
All the fruits were small in size, not getting bigger.
Could be Atalantia Species?

Pl. also check Atalantia species in efi site with images.

yes it looks like Atalantia monophylla 


Was lucky to see a couple of ripe fruits on the same plant yesterday. 

Attachments (3)

Net images showing different fruit images.

could not this  be just the run of the mill nagpur santara. i just bought some and they thay this same fluffy looking wrinkled skin and the knobby distal end


yes I agree with …, not Atalantia or Pamburus


I was also thinking it to be oranges.

Thank you all for the feedback.

The fruits were very tiny, approx half an inch.
The pictures have been taken using a zoom.
The unripe ones posted earlier in the same post were the size of a pea.


Noted. citruses of same sp can be many sizes, unless its commercially grown, where nurseries do most likely mass production in tissue explants etc


Pl. check tiny orange like fruits of ×Citrofortunella microcarpa


Since it is a cultivated plant it may be kumquat fruit; Citrus japonica


Thanks, … What id the difference between Citrus japonica and ×Citrofortunella microcarpa ?


Synonyms according to most databases, though not very clear

Catalogue of life considers Citrus microcarpa Bunge an accepted name with Citrofortunella microcarpa (Bunge) D. O. Wijnands as synonym
At the same time Citrus microcarpa A. Bunge ambiguous synonym of C. japonica Thunb.
World Flora online considers C. x microcarpa Bunge as ambiguous with Citrofortunella microcarpa (Bunge) D. O. Wijnands  as synonym
C. microcarpa Bunge as synonym of C. japonica Thunb
Kew Database considers C. x microcarpa Bunge as unplaced with Citrofortunella microcarpa (Bunge) D. O. Wijnands as synonym, does not list C. japonica


Citrus japonica Thunb. : 5 posts by 1 author. 5 images- 6 to 7 mb each.
Location : Gyaneswor, Kathmandu, Nepal
Elevation : 1300 m.
Date : 22 April 2020
Habitat : Cultivated
Syn : Fortunella japonica (Thunb.) Swingle
Nepali Name : मुन्तला  Muntalaa 

References:

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