Ilex uraiensis Yamam.

Trees evergreen, to 25 m tall. Branchlets subterete, longitudinally ridged, when young puberulent or glabrescent; third year’s branchlets longitudinally minutely fissured, glabrous, lenticels absent, with slightly raised, semilunar leaf scars. Leaves on first to second year’s branchlets; petiole 6-10 mm, adaxially narrowly sulcate, distal half winged by decurrent leaf base; leaf blade abaxially greenish, adaxially green, shiny, elliptic or obovate-elliptic, 3.5-10 × 1.2-3.5 cm, thickly leathery, both surfaces glabrous, midvein slightly impressed adaxially, lateral veins 8 or 9 pairs, raised on both surfaces, reticulate veins raised on both surfaces, base cuneate, margin sparsely serrate, apex shortly and abruptly acuminate. Inflorescences: 1-flowered cymes, fasciculate, axillary on second or third year’s branchlets. Male inflorescences: bracts suborbicular, ciliate; pedicels 3-5 mm, puberulent; bracteoles 2, basal, ciliate; flowers white, 4-merous; calyx patelliform, ca. 2 mm in diam., 4-lobed, lobes orbicular, ciliate; petals 4, obovate-orbicular, 3-5 × ca. 2.5 mm, ciliate, basally slightly connate; stamens 4, longer than petals, anthers oblong-ovoid, ca. 1.25 mm; rudimentary ovary subglobose, apex rounded or slightly depressed. Female flowers not known. Infructescences: bracts oblong-ovate, puberulent, ciliate; fruiting pedicels 6-8 mm, slender, pubescent; bracteoles 2, deltoid, puberulent, ciliate. Fruit red, globose, ca. 1.1 cm in diam.; persistent calyx suborbicular, ciliate; persistent stigma navel-like, ca. 2.5 mm in diam.; pyrenes 4, oblong, 7-8 mm, ca. 4.5 mm in diam., both ends obtuse, abaxially flattened and depressed, laterally irregularly striate and rugose, endocarp stony. Fl. Mar-Apr, fr. Jul-Dec.

Fujian, Taiwan (Pingdong, Taibei) [Japan (Ryukyu Islands)].

Broad-leaved forests, hills; 800-2000 m.

Ilex formosae (Loesener) H. L. Li; I. mertensii Maxim owicz var. formosae Loesener; I. uraiensis var. formosae (Loesener) S. Y. Hu; I. uraiensis var. macrophylla S. Y. Hu.

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Ilex uraiensis is a species of plant in the family Aquifoliaceae. It is endemic to Taiwan.

Leaves and inflorescence

Flower, stamens and petals crisscross

The fruit is red when ripe.

Veins on the underside of leaf.

Leaves alternate, dense. Young leaves are red.

Plant in spring

Bark

Flowers remain on branches after withering.

Ilex uraiensis là một loài thực vật có hoa trong họ Aquifoliaceae. Loài này được Mori & Yamamoto mô tả khoa học đầu tiên năm 1932.

乌来冬青（学名：Ilex uraiensis）为冬青科冬青属的植物，是台灣的特有植物。分布于台灣海拔400米的地区，一般生于山地阔叶林中，目前已由人工引种栽培。