討論:光葉柃木

山羊百科，林文智老師的植物、山岳、攝影紀錄

9. Eurya nitida Korthals 光葉柃木 Small trees or shrubs; ultimate branchlets ridged, glabrous. Leaves thin-coriaceous, elliptic or oblong-oblanceolate, 4-6.5 cm long, 1.5-2.5 cm wide, glabrous on both surfaces, acuminate or acute, attenuate or cuneate at base, margins finely serrulate; petioles decurrent, glabrous, 2-5 mm long. Flowers 1-4, axillary; pedicels 1-3 mm long, bracteoles 2, attached at apex of the pedicels; male flowers: sepals 5, rounded, 1.5-2 mm across; petals 5, oblong, 3-4 mm long, 2-3 mm wide; stamens about 15, anther oblong, rudimentary ovary present; female flowers: sepals and petals similar to that of the male flowers; petals oblong, 2-2.5 mm long, 1.5 mm wide; ovary ovate, glabrous, 1.5 mm long; styles 2-3 mm long, 3-fid, segments 0.5 mm long, recurved. Fruit black, globose, 3-4 mm in diam., mucronate.

India, Sri Lanka, Java, Myanmur (Burma), Vietnam, the Philippines and Taiwan. Taiwan, at low to medium altitudes.

TAIPEI: Wanli, Kuo 5359. TAICHUNG: Chunhsuehshan, Liu et al. 355. Anmashan, Kuo 8649. NANTOU: Fonghuangshan, Hsu 6205. PINGTUNG: Tawushan, Matsuda 1315; Kuaikuo, Tawushan, Yang 23470.

42.细齿叶柃 　　　Eurya nitida Korthals

灌木或小乔木，高2-5米，全株无毛；树皮灰褐色或深褐色，平滑；嫩枝稍纤细，具2棱，黄绿色，小枝灰褐色或褐色，有时具2棱；顶芽线状披针形，长达1厘米，无毛。叶薄革质，椭圆形、长圆状椭圆形或倒卵状长圆形，长4-6厘米，宽1.5-2.5厘米，顶端渐尖或短渐尖，尖头钝，基部楔形，有时近圆形，边缘密生锯齿或细钝齿，上面深绿色，有光泽，下面淡绿色，两面无毛，中脉在上面稍凹下，下面凸起，侧脉9-12对，在上面不明显，下面稍明显；叶柄长约3毫米。花1-4朵簇生于叶腋，花梗较纤细，长约3毫米。雄花：小苞片2，萼片状，近圆形，长约1毫米，无毛；萼片5，几膜质，近圆形，长1.5-2毫米，顶端圆，无毛；花瓣5，白色，倒卵形，长3.5-4毫米，基部稍合生；雄蕊14-17枚，花药不具分格，退化子房无毛。雌花的小苞片和萼片与雄花同；花瓣5，长圆形，长2-2.5毫米，基部稍合生；子房卵圆形，无毛，花柱细长，长约3毫米，顶端3浅裂。果实圆球形，直径3-4毫米，成熟时蓝黑色；种子肾形或圆肾形，亮褐色，表面具细蜂窝状网纹。花期11月至次年1月，果期次年7-9月。

46.细齿叶柃 Eurya nitida Korthals, Verh. Nat. Gesch. Ned. Bezitt. Bot. 115. 1841.

Shrubs or trees, 2-5 m tall. Young branches grayish brown; current year branchlets yellowish green, slender, 2-ribbed, glabrous; terminal buds to 1 cm, glabrous. Petiole 2-5 mm, glabrous; leaf blade elliptic, oblong-elliptic, or obovate-oblong, (3-)4-6(-7) × 1.5-2.5 cm, thinly leathery to leathery, abaxially pale green to yellowish green, adaxially dark green and shiny, both surfaces glabrous, midvein abaxially elevated and adaxially slightly impressed, secondary veins 9-12 on each side of midvein, abaxially slightly visible, and adaxially obscure, base cuneate to rounded, margin closely serrulate, crenulate, or subentire, apex obtuse, acute, or shortly acuminate and sometimes with an emarginate tip. Flowers axillary, solitary or to 4 in a cluster. Pedicel 2-3 mm, slender, glabrous. Male flowers: bracteoles suborbicular, ca. 1 mm, glabrous; sepals suborbicular to ovate, 1.5-2.5 mm, submembranous, glabrous, apex rounded; petals obovate, 3.5-4 mm; stamens 14-20; anthers not locellate; pistillode glabrous. Female flowers: bracteoles and sepals similar to those of male flowers; petals oblong, 2-2.5 mm; ovary ovoid, glabrous, 3-loculed; style 1.5-3 mm, apically 3-lobed. Fruit bluish black when mature, globose, 3-4 mm in diam. Seeds brown, reniform to globose-reniform, shiny. Fl. Nov-Jan, fr. Jul-Sep.

雄蕊约15枚；叶片顶端渐尖或短尖，边缘具钝齿。

叶薄革质，基部楔形，干后下面常淡绿色；花柱长2-3毫米。 细齿叶柃 Eurya nitida Korthals

叶稍厚，基部圆形或几圆形，干后下面常黄绿色；花柱长2毫米。 黄背叶柃（变种） Eurya nitida Korthals var. aurescens (Rehd. et Wils.) Kobuski

雄蕊18-20枚；叶片顶端钝，常有微凹，边近全缘或有稀疏钝齿。 台湾柃 Eurya hayatai Yamamoto