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FOC | Family List | FOC Vol. 11 | Icacinaceae | Gonocaryum

2. Gonocaryum calleryanum (Baillon) Beccari, Malesia. 1: 123. 1877.

台湾琼榄 tai wan qiong lan

Phlebocalymna calleryana Baillon, Adansonia 9: 147. 1869; Gonocaryum diospyrosifolium Hayata.

Shrubs. Branchlets and young branches curved, terete; branchlets gray; young branches light brown or black when dry. Petiole 1-2 cm; leaf blade light yellow-green when dry, abaxially not shiny, adaxially shiny, orbicular or broadly ovate, 8-14 × 5-7 cm, leathery, midvein and lateral veins abaxially prominent, reticulate veins inconspicuous abaxially, conspicuously prominent adaxially, base rounded to cuneate, usually unequal, margin entire. Racemes short, 1-2 cm, few flowered. Flowers bisexual, without or with short pedicel, pubescent; bractlets broadly triangular, ca. 1.5 mm. Sepals 6, unequal, orbicular, ca. 2 × 2 mm, ciliate. Corolla cylindric, ca. 5 mm; tube ca. 3 mm, apically 5-lobed; lobes triangular, ca. 2 mm, base ca. 2 mm wide, valvate, apex acute, thickened, incurved. Stamens 5, inserted at corolla throat; anthers sessile, ovoid-triangular, ca. 0.8 × 0.8 mm. Ovary conical, ca. 1.5 × 1.5 mm, minutely hispid, with a very short stalk; stigma ca. 0.2 mm. Drupe black, ovoid to ellipsoid, 2.5-3.5 × 2-2.2 cm, glabrous; exocarp thin, fragile. Fl. and fr. unknown.

Forests on coral reef islands; sea level. Taiwan (Hengchun peninsula, Lan Yu) [Indonesia, Philippines].

This is a rare species.


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