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Citrus crassifolia
Fruit
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Sapindales
Family:	Rutaceae
Genus:	Citrus
Species:	C. crassifolia
Binomial name
Citrus crassifolia Swingle, 1915
Synonyms
Fortunella crassifolia Fortunella x crassifolia

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.

Initially, C. crassifolia was described as a synonym of Citrus japonica. Howerver, recent phylogenetic analysis suggested that C. crassifolia is a single 'true' species.

C. crassifolia was brought to Japan from China at the end of the 19th century. It is a hybrid of Nagami and Marumi. It has seedy oval fruits and thick leaves and was characterized as a different species by Swingle. Its fruit is typically eaten skin and all.

References

1. ^ Swingle, Walter T. (1915). "A new genus, Fortunella, comprising four species of kumquat oranges". Journal of the Washington Academy of Sciences. 5 (5): 173–174. JSTOR 24520657.
2. ^ "Fortunella X crassifolia Swingle". Integrated Taxonomic Information System. Retrieved 2024-01-26.
3. "Fortunella crassifolia Swingle". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture.
4. Yasuda, Kiichi; Yahata, Masaki; Kunitake, Hisato (2015). "Phylogeny and Classification of Kumquats (Fortunella spp.) Inferred from CMA Karyotype Composition". The Horticultural Journal. 85 (2): 115–121. doi:10.2503/hortj.MI-078.
5. Hesser, Amanda. "The Way We Eat: Skin Deep". The New York Times Magazine. Retrieved 5 July 2023.

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