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Citrus ID







Cultivar or taxon


Casimiroa La Llave & Lex. (sec. Swingle and Reece 1967; Bayer et al. 2009)



Crown compact or dense or open, not weeping. First-year twig surface glabrous; second- or third-year twig surface striate; thorns absent or not persistent; prickles absent or not persistent. Petiole glabrous, length very long, wings absent. Leaflets five to seven, margins entire or crenate/crenulate, rachis wings absent, shade leaflet blades weakly conduplicate, sun leaflet blades flat or weakly conduplicate. Crushed leaflets without discernible scent. Fruit broader than long, or as broad as long, or longer than broad; rind light green with some break to yellow (5), green-yellow (6), yellow (7-10), or yellow-orange (11); rind texture smooth (1-3); firmness leathery; navel absent; flesh yellow.

Swingle and Reece (1967) additionally noted that Casimiroa is a Mexican and Central American fruit tree.



Additional information on related species may be found in Martinez's 1951 work on Mesoamerican Casimiroas (Anales Inst. Biol. Univ. Nac. Mexico 22: 25–81) or Chiang's 2001 taxonomic treatment in the Flora de Nicaragua (Missouri Botanical Garden Press).



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.

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.



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Citrus ID Edition 2
October, 2011