None
Citrus x aurantium L., pro sp. X Citrus trifoliata L. (sensu Mabberley 2004, Bayer et al. 2009); Citrus aurantium L. x Poncirus trifoliata (L.) Raf. (sec. Swingle and Reece 1967; sensu Tanaka sec. Cottin 2002)
Crown compact or dense, not weeping. First-year twig surface glabrous; second- or third-year twig surface striate; thorns straight; prickles absent or not persistent. Petiole glabrous, length short or long, wings medium, adjoining the blade. Leaflets one, margin crenate/crenulate, shade leaflet blades weakly conduplicate, sun leaflet blades weakly or strongly conduplicate. Scent of crushed leaflets spicy or peppery. Fruit as broad as long or longer than broad; rind yellow (7-10), yellow-orange (11), or orange (12); rind texture slightly rough (4-5); firmness leathery; navel absent; flesh orange; taste sour.
Swingle and Reece (1967) additionally noted that: "These hybrids greatly resemble citranges but seem to be even more vigorous and cold-resistant. The Brownell citradia (fig. 3-42) grows vigorously and fruits freely in northern Alabama at Tuscaloosa (Lat. 33° 12’ N.). It makes a good stock for the commonly cultivated citrus fruits."
Bayer, R.J., D.J. Mabberley, C. Morton, C.H. Miller, I.K. Sharma, B.E. Pfeil, S. Rich, R. Hitchcock, and S. Sykes. 2009. A molecular phylogeny of the orange subfamily (Rutaceae: Aurantioideae) using nine cpDNA sequences. American Journal of Botany 96: 668–685.
Cottin, R. 2002. Citrus of the World: A citrus directory. Version 2.0. France: SRA INRA-CIRAD.
Mabberley, D.J. 2004. Citrus (Rutaceae): A review of recent advances in etymology, systematics and medical applications. Blumea 49: 481–498.
Swingle, W.T. and P.C. Reece. 1967. The botany of Citrus and its wild relatives. In: Reuther, W., H.J. Webber, and L.D. Batchelor (eds.). The Citrus industry. Ed. 2. Vol. I. University of California, Riverside. http://lib.ucr.edu/agnic/webber/Vol1/Chapter3.html.
Search for this cultivar in NCBI Entrez
Citrus ID Edition 2
October, 2011
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