银叶树Heritiera littoralis
中文名（Chinese Name）：银叶树
学名（Scientific Name）：Heritiera littoralis Dryand.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Amygdalus litoralis (Dryand.) Kuntze Balanopteris tothila Gaertn. Sutherlandia littoralis J.F.Gmel. Samadera littoralis (Dryander) Oken
科属（Family & Genus）：梧桐科（Sterculiaceae）银叶树属
形态特征（Description）：常绿乔木，高约10米；树皮灰黑色，小枝幼时被白色鳞秕。叶革质，矩圆状披针形、椭圆形或卵形，长10-20厘米，宽5-10厘米，顶端锐尖或钝，基部钝，上面无毛或几无毛，下面密被银白色鳞秕；叶柄长1-2厘米；托叶披针形，早落。圆锥花序腋生，长约8厘米，密被星状毛和鳞秕；花红褐色；萼钟状，长4-6毫米，两面均被星状毛，5浅裂，裂片三角形，长约2毫米；雄花的花盘较薄，有乳头状突起，雌雄蕊柄短而无毛，花药4-5个在雌雄蕊柄顶端排成一环；雌花的心皮4-5枚，柱头与心皮同数且短而向下弯。果木质，坚果状，近椭圆形，光滑，干时黄褐色，长约6厘米，宽约3.5厘米，背部有龙骨状突起；种子卵形，长2厘米。花期夏季。
分布（Distribution）：产广东、广西和台湾，印度、越南、柬埔寨、斯里兰卡、菲律宾和东南亚各地以及非洲东部、大洋洲均有分布。
用途（Use）：本种为热带海岸红树林的树种之一。木材坚硬，为建筑、造船和制家具的良材。果木质，内有厚的木栓状纤维层，故能漂浮在海面而散布到各地。
引自中国植物志英文版：FOC Vol. 12 Page 313
Heritiera littoralis Aiton, Hort. Kew. 3: 546. 1789.
银叶树 yin ye shu| Sterculiaceae | Heritiera
Evergreen trees, up to 10(-15) m tall; bark gray-brown. Young branchlets white scurfy scaly. Stipules lanceolate, caducous; petiole 1-2 cm; leaf blade oblong-lanceolate, elliptic, or ovate, 10-20 × 5-10 cm, leathery, abaxially densely silver-white scurfy scaly, adaxially glabrous or nearly so, base obtuse, apex acute or obtuse. Inflorescence paniculate, axillary, ca. 8 cm, densely stellate hairy or with scales. Calyx red-brown, campanulate, 4-6 mm, both surfaces stellate hairy, lobes triangular,
ca. 2 mm. Male flowers: disk thin, papillate. Androgynophore short and glabrous. Anthers 4 or 5, in 1 ring. Female flowers: carpels 4 or 5. Stigmas as many as carpels, short and curved downward. Fruit nutlike, woody, drying yellow-brown, nearly ellipsoid, ca. 6 × 3.5 cm, keeled on back, glabrous. Seeds ovoid, ca. 2 cm. Fl. summer.
Mangrove forests. Guangdong, Guangxi, Hainan, Taiwan [Cambodia, India, Indonesia, Malaysia, Philippines, Sri Lanka, Vietnam; E Africa, Australia].
The hard, strong timber is used for ships’ masts when sufficiently straight and long, as well as for house posts, joists, wheel hubs, and boat ribs.
（责任编辑：徐晔春）
学名（Scientific Name）：Heritiera littoralis Dryand.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Amygdalus litoralis (Dryand.) Kuntze Balanopteris tothila Gaertn. Sutherlandia littoralis J.F.Gmel. Samadera littoralis (Dryander) Oken
科属（Family & Genus）：梧桐科（Sterculiaceae）银叶树属
形态特征（Description）：常绿乔木，高约10米；树皮灰黑色，小枝幼时被白色鳞秕。叶革质，矩圆状披针形、椭圆形或卵形，长10-20厘米，宽5-10厘米，顶端锐尖或钝，基部钝，上面无毛或几无毛，下面密被银白色鳞秕；叶柄长1-2厘米；托叶披针形，早落。圆锥花序腋生，长约8厘米，密被星状毛和鳞秕；花红褐色；萼钟状，长4-6毫米，两面均被星状毛，5浅裂，裂片三角形，长约2毫米；雄花的花盘较薄，有乳头状突起，雌雄蕊柄短而无毛，花药4-5个在雌雄蕊柄顶端排成一环；雌花的心皮4-5枚，柱头与心皮同数且短而向下弯。果木质，坚果状，近椭圆形，光滑，干时黄褐色，长约6厘米，宽约3.5厘米，背部有龙骨状突起；种子卵形，长2厘米。花期夏季。
分布（Distribution）：产广东、广西和台湾，印度、越南、柬埔寨、斯里兰卡、菲律宾和东南亚各地以及非洲东部、大洋洲均有分布。
用途（Use）：本种为热带海岸红树林的树种之一。木材坚硬，为建筑、造船和制家具的良材。果木质，内有厚的木栓状纤维层，故能漂浮在海面而散布到各地。
引自中国植物志英文版：FOC Vol. 12 Page 313
Heritiera littoralis Aiton, Hort. Kew. 3: 546. 1789.
银叶树 yin ye shu| Sterculiaceae | Heritiera
Evergreen trees, up to 10(-15) m tall; bark gray-brown. Young branchlets white scurfy scaly. Stipules lanceolate, caducous; petiole 1-2 cm; leaf blade oblong-lanceolate, elliptic, or ovate, 10-20 × 5-10 cm, leathery, abaxially densely silver-white scurfy scaly, adaxially glabrous or nearly so, base obtuse, apex acute or obtuse. Inflorescence paniculate, axillary, ca. 8 cm, densely stellate hairy or with scales. Calyx red-brown, campanulate, 4-6 mm, both surfaces stellate hairy, lobes triangular,
ca. 2 mm. Male flowers: disk thin, papillate. Androgynophore short and glabrous. Anthers 4 or 5, in 1 ring. Female flowers: carpels 4 or 5. Stigmas as many as carpels, short and curved downward. Fruit nutlike, woody, drying yellow-brown, nearly ellipsoid, ca. 6 × 3.5 cm, keeled on back, glabrous. Seeds ovoid, ca. 2 cm. Fl. summer.
Mangrove forests. Guangdong, Guangxi, Hainan, Taiwan [Cambodia, India, Indonesia, Malaysia, Philippines, Sri Lanka, Vietnam; E Africa, Australia].
The hard, strong timber is used for ships’ masts when sufficiently straight and long, as well as for house posts, joists, wheel hubs, and boat ribs.
（责任编辑：徐晔春）
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