显脉杜英Elaeocarpus dubius

中文名(Chinese Name):显脉杜英
学名(Scientific Name):Elaeocarpus dubius A. DC.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Elaeocarpus griffiihii Mast. Dunn et Tutch.
科属(Family & Genus):杜英科(Elaeocarpaceae)杜英属
形态特征(Description):常绿乔木,高达25米;嫩枝纤细,初时有银灰色短柔毛,以后变秃净。叶聚生于枝顶,薄革质,长圆形或披针形,长5-7厘米,宽2-2.5厘米,偶有长达10厘米,宽4厘米,先端急短尖或渐尖,尖头钝,基部阔楔形或钝,稍不等侧,上面深绿色,发亮,下面浅绿色,无毛,侧脉8-10对,与网脉干后在上下两面都明显突起,边缘有钝齿;叶柄纤细,长1-2厘米,偶有长达3厘米,无毛。总状花序生于枝顶的叶腋内,长3-5厘米,被灰白色短柔毛;花柄长7-9毫米,被毛;萼片5片,狭窄披针形,长7-8毫米,宽2毫米,先端尖,内外两面都有灰白色微毛;花瓣5片,与萼片等长,长圆形,长7-8毫米,宽约2.5毫米,内外两面均有灰白色毛,先端1/3撕裂,裂片9-11条;雄蕊20-23枚,花丝长1毫米,花药长3.5毫米,顶端有芒刺,长约1.5毫米;花盘10裂,被毛;子房3室,被毛,花柱长约5毫米。核果椭圆形,长1-1.3厘米,无毛,内果皮坚骨质,厚约1毫米。花期3-4月。
分布(Distribution):产于广东、海南、广西及云南。生长于低海拔的常绿林中。越南也有分布。
用途(Use):
引自中国植物志英文版FOC Vol. 12 Page 228
Elaeocarpus dubius A. Candolle, Bull. Herb. Boissier, sér. 2. 3: 366. 1903.
显脉杜英 xian mai du ying | Elaeocarpaceae  | Elaeocarpus
Trees evergreen, to 25 m tall. Branchlets slender, silvery-gray pubescent at first, glabrescent. Leaves crowded at twig apices; petiole 1-2 cm, rarely to 3 cm, slender, glabrous, swollen at both ends; leaf blade oblong or lanceolate, 4-8 × 2-2.5 cm, rarely to 10 × 4 cm, thinly leathery, glabrous, lateral veins 8-10 per side, conspicuously raised on both surfaces, veinlets dense, prominently raised abaxially, not glandular, base broadly cuneate or obtuse, margin crenate, apex acute or acuminate, acumen obtuse. Racemes in axils of fallen and current leaves, 3-5 cm, 4-7-flowered; peduncles silvery gray-white pubescent. Pedicel ca. 5 mm, silvery-white pubescent. Flower buds ovoid-oblong. Sepals 5, conspicuously keeled, narrowly lanceolate, 7-8 × ca. 2 mm, abaxially minutely puberulent, apex acute. Petals 5, oblong, ca. as long as sepals, 7-8 × ca. 2.5 mm, both surfaces gray-white pubescent, upper 1/3 laciniate; segments 9-11. Stamens 20-23; filaments ca. 1 mm; anthers ca. 3.5 mm, with awn ca. 1.5 mm. Disk 10-lobed, pubescent. Ovary 3-loculed, pubescent; style ca. 5 mm. Drupe ellipsoid, 1-1.3 cm × 6-8 mm, glabrous; endocarp bony, ca. 1 mm thick. Fl. Mar-Apr, fr. Apr-Jun.
Low-elevation forests; 600-700 m. Guangdong, Guangxi, Guizhou, Hainan, Yunnan [Vietnam].
显脉杜英Elaeocarpus dubius

显脉杜英Elaeocarpus dubius
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