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Cultivar or taxon


Citrus x oliveri Mabb. [=Citrus australasica F. Muell. x Citrus microcarpa Bunge] (sensu Mabberley 2004); Microcitrus australasica (F. Muell.) Swingle X (Fortunella sp. x Citrus mitis Blanco) (sensu 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 medium; wings absent, if present, narrow, adjoining the blade. Leaflets one, margin bluntly toothed, shade leaflet blades weakly conduplicate, sun leaflet blades weakly conduplicate. Scrent of crushed leaflets spicy or peppery or freshly lemon-like. Fruit broader than long, as broad as long, or longer than broad; rind green-yellow (6), yellow (7-10), yellow-orange (11), orange (12), or red-orange (13); rind texture smooth (1-3) or slightly rough (4-5); firmness leathery; navel absent; flesh orange; taste acidic-sweet or sour.

Swingle and Reece (1967) noted that: "The faustrimedin is a hybrid of the Australian finger-lime with the Calamondin, itself a hybrid between the kumquat and some variety of orange of the mandarin group (Citrus reticulata). It is thus a trigeneric hybrid of Citrus, Fortunella and Microcitrus. The faustrimedin has small leaves much like those of the Australian finger-lime and is hardy like the Calamondin."



Swingle and Reece (1967) additionally noted that: "This hybrid, first made by Oliver (1911, p. 40, pl. 1, fig. 2), may be of use in obtaining still more complex hybrids containing the blood of Eremocitrus or Poncirus . It is a vigorous grower and shows some promise as a rootstock. It is easily propagated from cuttings. The fruits are like finger-limes but are shorter, nearly seedless, and pleasantly acid."



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.

Oliver, G.W. 1911. The seeding inarch and nurse-plant methods of propagation. U.S. Department of Agriculture Bureau of Plant Industry Bullletin 202. 43 pp.

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