Northeastern Asian Flora
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Ilex rotunda Thunb.   (redirected from: Ilex koshunensis Yamam.)
Family: Aquifoliaceae
[Ilex koshunensis Yamam., moreIlex kosunensis Yamam., Ilex laevigata Blume ex Miq., Ilex microcarpa Lindl. ex Paxton, Ilex rotunda var. microcarpa (Lindl. ex Paxton) S.Y.Hu, Ilex rotunda var. sinensis Masam., Ilex sasakii Yamam., Ilex unicanaliculata C.J.Tseng]
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  • Korea Flora
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Korea Flora: Evergreen tree. Height 10m. Winter Buds and Stems: Buds short, less than 1mm long. Branches glabrous, dark brown. Leaves: Alternate, thick, elliptic or oblong, apex acute, base cuneate, 5.5-7.5(11)cm × 3.5-4cm. Both surfaces glabrous; midrib sunken above, prominent beneath; margins entire; turning brown when dry. Petiole 10-20mm long. Flowers: Dioecious, cymes axillary on new branches, shorter than leaves. Flowers 4mm in diameter, purple; sepals and petals 4-5 each, petals longer than sepals and reflexed; stamens 4-5, large in staminate flowers but reduced in pistillate flowers. Ovary globose, green. Peduncle 5-6mm long. Fruit and Seeds: Fruits globose, 5-8mm in diameter, ripening red.

Flowering Period: May-June
Fruiting Period: October
Distribution: Vietnam, Central and Southern China, Taiwan, Western Honshu southward to Okinawa (Japan); Jeju Island and Jeollanam-do (Korea)


Taxonomic Notes: Ilex rotunda and Ilex integra are similar trees that can be misidentified. Ilex rotunda has dark red young branches with well-developed secondary veins on leaf undersides and relatively long (1-2cm) petioles, while Ilex integra has green young branches with less distinct secondary veins and slightly reddish, shorter petioles (0.5-1.5cm).

Ilex rotunda
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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