Aegle

Synonyms

Belou Adans.

Cultivar or taxon

Aegle Corrêa (sec. Swingle and Reece 1967, Mabberley 2004, Bayer et al. 2009; sensu Tanaka sec. Cottin 2002)

Description

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 very long, wings absent. Leaflets three, margins crenate to crenulate, rachis wings absent, shade leaflet blades flat or weakly conduplicate, sun leaflet blades weakly or strongly conduplicate. Leaflets not scented when crushed. Fruit as broad as long or longer than broad; rind dark green (3), medium green (4), light green with some break to yellow (5), yellow (7-10), yellow-orange (11), or orange (12); rind texture smooth (1-3) or slightly rough (4-5); firmness woody; navel absent; flesh orange.

Swingle and Reece (1967) provided the following additional notes on the genus: "A thorny tree with deciduous, dimorphic 3-foliolate leaves; leaflets crenate, articulated with the petiole, thin and of soft texture, with numerous translucent oil glands; inflorescences axillary, loosely branched; pedicels shorter than the petals; flowers large; calyx deciduous, small, saucer-shaped, with 4-5 short, blunt lobes; petals 4-5, large, imbricate, long-ovate, with bluntly rounded apices; stamens very numerous, with subulate filaments and long, linear anthers; disk small, annular; ovary cylindric, with 8-20 locules, each containing numerous ovules in 2 rows; ovary tapering slightly toward the top and somewhat narrowed into the style, which is about 1/4 or 1/5 as long as the ovary; stigma with longitudinal furrows, cylindrical or bluntly conical, slightly wider than the style; fruits globose or subglobose with a very hard, woody shell, segments 8-16 or more (Talbot, 1909, p. 205, stated: "8-20"), narrow, filled with 6-10 or more seeds imbed[d]ed in transparent glutinous gum, lateral walls of the segments thickened and fleshy; seeds oblong, slightly flattened, woolly, monoembryonic; cotyledons hypogeous in germination."

Notes

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.

References

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.

Resources

Search for this cultivar in NPGS/GRIN1

Search for this cultivar in NCBI2 Entrez, NCBI Nucleotide, or NCBI Expressed Sequence Tags

1GRIN: Germplasm Resources Information Network; NPGS: National Plant Germplasm System

2NCBI: National Center for Biotechnology Information

           Trifoliolate leaf of  Aegle marmelos  (Riverside,   CA)

Trifoliolate leaf of Aegle marmelos (Riverside, CA)

           Fruits of  Aegle marmelos  (Riverside, CA)

Fruits of Aegle marmelos (Riverside, CA)

             Fruit cross-section of  Aegle marmelos    (Riverside, CA)

Fruit cross-section of Aegle marmelos (Riverside, CA)