Taxon:  Citrus ×megaloxycarpa Lush. (Citrus Sour Pummelo Group)



Summary
Genus:
Citrus
Family:
Rutaceae
Subfamily:
Aurantioideae
Tribe:
Aurantieae
Subtribe:
Citrinae
Nomen number:
10751
Place of publication:
Indian Forester 36:345.  1910
Hybrid parentage:
possibly the hybrid of Citrus × limon × C. maxima
Verified:
10/30/1990 ARS Systematic Botanists.
Accessions:
2 (1  active, 1  available) in National Plant Germplasm System.  (Map it)
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
No images


Conservation Status

Reference(s)
  1. APHIS. Agricultural Risk Management System United States Department of Agriculture.
  2. Carpenter, J. B. & P. C. Reece. 1969. Catalog of genera, species, and subordinate taxa in the orange subfamily Aurantioideae (Rutaceae).
  3. Fang, D. et al. 1998. Phylogenetic relationships among selected Citrus germplasm accessions revealed by inter-simple sequence repeat (ISSR) markers. J. Amer. Soc. Hort. Sci. 123:612-617.
  4. Jena, S. N. et al. 2009. Molecular phylogeny in Indian Citrus L. (Rutaceae) inferred through PCR-RFLP and trnL-trnF sequence data of chloroplast DNA. Sci. Hort. 119:403-416. Note: this study included five accessions of Citrus megaloxycarpa that showed high genetic similarity; C. megaloxycarpa grouped either with the pummelo-limon cluster or closer to C. aurantiifolia, based on the latter it suggested that both species share "same genetic lineage"
  5. Kumar, S. et al. 2013. Molecular differentiation in Indian Citrus L. (Rutaceae) inferred from nrDNA ITS sequence analysis. Genet. Resources Crop Evol. 60:59-75.
  6. Malik, S. K. et al. 2013. Socio-economic importance, domestication trends and in situ conservation of wild Citrus species of Nrotheast India. Genet. Resources Crop Evol. 60:1655-1671.
  7. Sharma, B. D. et al. 2004. Genetic resources of Citrus of north-eastern India and their potential use. Genet. Resources Crop Evol. 51:411-418. Note: a sour pummelo
  8. Singh, R. & N. Nath. 1969. Practical approach to the classification of Citrus. In: H. D. Chapman (ed.), Proceedings of the First International Citrus Symposium. 1:438. Note: = Citrus grandis var. megaloxycarpa
  9. Stone, B. C. 1994. Citrus fruits of Assam: a new key to species, and remarks on Citrus assamensis Bhattacharya and Dutta, 1956. Gard. Bull. Singapore 46:110.
  10. Tanaka, T. 1954. Species problem in Citrus: a critical study of wild and cultivated units of Citrus, based upon field studies in their native homes. In: Tanaka, T., Revisio Aurantiacearum. 9:116. Note: lists as "megaloxicarpa"
Common names
LanguageNameAlternate namenoteseqCitation
Englishsour pummelo  1Kumar, S. et al. 2013. Molecular differentiation in Indian Citrus L. (Rutaceae) inferred from nrDNA ITS sequence analysis. Genet. Resources Crop Evol. 60:59-75.
unknownamilbed  2Stone, B. C. 1994. Citrus fruits of Assam: a new key to species, and remarks on Citrus assamensis Bhattacharya and Dutta, 1956. Gard. Bull. Singapore 46:110.
Distribution
order_codeStatusContinentSubcontinentCountryStateNoteReference
2CultivatedAsia-TropicalIndian SubcontinentIndiaArunachal Pradesh Jena, S. N. et al. 2009. Molecular phylogeny in Indian Citrus L. (Rutaceae) inferred through PCR-RFLP and trnL-trnF sequence data of chloroplast DNA. Sci. Hort. 119:403-416. Note: this study included five accessions of Citrus megaloxycarpa that showed high genetic similarity; C. megaloxycarpa grouped either with the pummelo-limon cluster or closer to C. aurantiifolia, based on the latter it suggested that both species share "same genetic lineage"
2CultivatedAsia-TropicalIndian SubcontinentIndiaAssam Sharma, B. D. et al. 2004. Genetic resources of Citrus of north-eastern India and their potential use. Genet. Resources Crop Evol. 51:411-418. Note: a sour pummelo
2CultivatedAsia-TropicalIndian SubcontinentIndiaMeghalaya Jena, S. N. et al. 2009. Molecular phylogeny in Indian Citrus L. (Rutaceae) inferred through PCR-RFLP and trnL-trnF sequence data of chloroplast DNA. Sci. Hort. 119:403-416. Note: this study included five accessions of Citrus megaloxycarpa that showed high genetic similarity; C. megaloxycarpa grouped either with the pummelo-limon cluster or closer to C. aurantiifolia, based on the latter it suggested that both species share "same genetic lineage"
2CultivatedAsia-TropicalIndian SubcontinentIndiaTripura Sharma, B. D. et al. 2004. Genetic resources of Citrus of north-eastern India and their potential use. Genet. Resources Crop Evol. 51:411-418. Note: a sour pummelo
2CultivatedAsia-TropicalIndian SubcontinentIndiaUttar Pradesh Jena, S. N. et al. 2009. Molecular phylogeny in Indian Citrus L. (Rutaceae) inferred through PCR-RFLP and trnL-trnF sequence data of chloroplast DNA. Sci. Hort. 119:403-416. Note: this study included five accessions of Citrus megaloxycarpa that showed high genetic similarity; C. megaloxycarpa grouped either with the pummelo-limon cluster or closer to C. aurantiifolia, based on the latter it suggested that both species share "same genetic lineage"
Cultivated
Asia-Tropical
  • INDIAN SUBCONTINENT: India [Arunachal Pradesh, Assam, Meghalaya, Tripura, Uttar Pradesh]

Reference(s)
  1. Jena, S. N. et al. 2009. Molecular phylogeny in Indian Citrus L. (Rutaceae) inferred through PCR-RFLP and trnL-trnF sequence data of chloroplast DNA. Sci. Hort. 119:403-416. Note: this study included five accessions of Citrus megaloxycarpa that showed high genetic similarity; C. megaloxycarpa grouped either with the pummelo-limon cluster or closer to C. aurantiifolia, based on the latter it suggested that both species share "same genetic lineage"
  2. Sharma, B. D. et al. 2004. Genetic resources of Citrus of north-eastern India and their potential use. Genet. Resources Crop Evol. 51:411-418. Note: a sour pummelo
Economic Uses
UsageTypeNoteReference
Human foodfruit Jena, S. N. et al. 2009. Molecular phylogeny in Indian Citrus L. (Rutaceae) inferred through PCR-RFLP and trnL-trnF sequence data of chloroplast DNA. Sci. Hort. 119:403-416. Note: this study included five accessions of Citrus megaloxycarpa that showed high genetic similarity; C. megaloxycarpa grouped either with the pummelo-limon cluster or closer to C. aurantiifolia, based on the latter it suggested that both species share "same genetic lineage"
Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgstest.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=10751. Accessed 15 April 2026.