''Citrus indica'' is a species of hybrid ''

Citrus ''Citrus'' is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes. The genus ''Citrus'' is nati ...

'' known by the common name Indian wild orange.Malik, S. K., R. Chaudhury, O. P. Dhariwal and R. K. Kalia. (2006)
Collection and characterization of ''Citrus indica'' Tanaka and ''C. macroptera'' Montr.: wild endangered species of northeastern India.
''Genetic Resources and Crop Evolution'' 53 1485-93. It is native to South Asia.

Taxonomy

This wild orange plant was originally characterized as one of the likely ancestors of today's cultivated citrus fruits, if not the main one. It was considered to be the most "primitive" citrus.Laskar, M. A., M. Hynniewta and C.S. Rao. (2009)
In vitro propagation of ''Citrus indica'' Tanaka — An endangered progenitor species.
''Indian Journal of Biotechnology'' 8 311-16. However, genomic analysis has revealed it to be a citrus hybrid, with maternal

citron The citron (''Citrus medica''), historically cedrate, is a large fragrant citrus fruit with a thick rind. It is said to resemble a 'huge, rough lemon'. It is one of the original citrus fruits from which all other citrus types developed throu ...

ancestry and also

mandarin orange The mandarin orange (''Citrus reticulata''), also known as the mandarin or mandarine, is a small citrus tree fruit. Treated as a distinct species of Orange (fruit), orange, it is usually eaten plain or in fruit salads. Tangerines are a group of ...

and unspecified papeda contributions. It can be used as a

citrus rootstock Citrus rootstock are plants used as rootstock for citrus plants. A rootstock plant must be compatible for scion grafting, and resistant to common threats, such as drought, frost, and common citrus diseases. Principal rootstocks Five types of root ...

for cultivated citrus. Recent searches of the plant's reported home range confirmed its presence only in

Meghalaya Meghalaya (, or , meaning "abode of clouds"; from Sanskrit , "cloud" + , "abode") is a state in northeastern India. Meghalaya was formed on 21 January 1972 by carving out two districts from the state of Assam: (a) the United Khasi Hills and Jai ...

, where it grows in the