Citrus crassifolia

Citrus crassifolia, the Meiwa kumquat, is a species of kumquat;^[2] 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.^[1]

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[1][2]
Synonyms
Fortunella crassifolia Fortunella x crassifolia

Initially, C. crassifolia was described as a synonym of Citrus japonica.^[3] However, recent phylogenetic analysis suggested that C. crassifolia is a single 'true' species.^[2][1][4]

C. crassifolia was brought to Japan from China at the end of the 19th century. It is a hybrid of Nagami (Citrus margarita) and Marumi (Citrus japonica). It has seedy oval fruits and thick leaves and was characterized as a different species by Swingle.^[1] Its fruit is typically eaten skin and all.^[5]