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Citrus ID






Rissoa Arn. (sec. Swingle and Reece 1967)

Cultivar or taxon


Atalantia Corrêa (sec. Swingle and Reece 1967, Bayer et al. 2009; 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 medium, wings absent. Leaflets one, margins entire, shade leaflet blades weakly conduplicate, sun leaflet blades weakly conduplicate. Scent of crushed leaflets sweetly orange-like or somewhat to strongly malodorous. Fruit broader than long; rind light green with some break to yellow (5), green-yellow (6), yellow (7-10), or yellow-orange (11); firmness leathery; navel absent.

Swingle and Reece (1967) provided the following additional notes on the genus:

"Stamens connate, forming a cylindric tube, or connate in groups, rarely free; fruits with numerous well-developed, juicy pulp-vesicles that fill all the space in the fruit not occupied by the few medium-sized seeds; stipuloid paraphylls absent.

Seven of the species of Atalantia fall in this subgenus. In general they much resemble the species of the subgenus Rissoa."



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.

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