槭叶翅子树Pterospermum acerifolium
中文名（Chinese Name）：槭叶翅子树
学名（Scientific Name）：Pterospermum acerifolium Willd.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Pterospermum diversifolium Blume Cavanilla acerifolia (L.) J.F.Gmel. Pentapetes acerifolia L. Pterospermadendron acerifolium (L.) Kuntze
科属（Family & Genus）：梧桐科（Sterculiaceae）翅子树属
形态特征（Description）：大乔木，树皮光滑，小枝的幼嫩部分密被茸毛。叶大，革质，近圆形或矩圆形，全缘、浅裂或有粗齿，长24-34厘米，宽14-29厘米，顶端截形或近圆形，并有浅裂或突尖，基部心形，上面被稀疏的毛或几无毛，下面密被淡黄色或带灰色的星状茸毛，基生脉7-12条，叶脉在下面凸出；叶柄粗壮，有条纹；托叶条裂，早落；小苞片条裂或掌状深裂。花单生，白色，芳香；萼片5枚，条状矩圆形，长9厘米，宽7毫米，外面密被黄褐色星状茸毛，内面被白色长柔毛；花瓣5片，条状矩圆形，略成楔形，宽7毫米，比萼稍短，无毛；退化雄蕊棒状，有毛；雄蕊15枚，每3枚集合成群与退化雄蕊互生；子房矩圆形，有5个棱角，5室，每室有胚珠多个。蒴果木质，矩圆状圆筒形，具柄，有5个不明显的凹陷面或浅沟，长10-15厘米，宽5-5.5厘米，初被淡红褐色茸毛，后无毛，顶端钝，基部渐狭，每室有种子多个；种子斜卵形，压扁状，具翅，翅大而薄，褐色，光滑。
分布（Distribution）：产云南南部勐海、勐仑等地，生于海拔1200-1640米的山坡上。
用途（Use）：
引自中国植物志英文版：FOC Vol. 12 Page 327, 328
Pterospermum acerifolium Willdenow, Sp. Pl. 3: 729. 1800.
翅子树 chi zi shu| Sterculiaceae | Pterospermum
Big trees; bark smooth. Branchlets densely velutinous when young. Stipules linear; petiole robust, striate; leaf blade nearly orbicular or oblong, sometimes ± lobed, 24-34 × 14-29 cm, leathery, abaxially densely yellowish and gray stellate velutinous, adaxially sparsely hairy or glabrous, base cordate, margin entire or crenate, apex truncate, nearly rounded, or pointed; juvenile leaves palmately lobed, peltate. Flowers solitary, fragrant; epicalyx lobes fimbriate or palmately divided. Sepals linear-oblong, ca. 9 × 0.7 cm, abaxially densely yellow-brown stellate velutinous, adaxially white villous. Petals white, linear-oblong, slightly cuneate, slightly shorter than sepals, glabrous. Staminodes clavate, hairy. Ovary oblong, 5-angular; ovules many per locule. Capsule woody, cylindrical, stipitate, obscurely 5-grooved, 10-15 × 5-5.5 cm, reddish brown velutinous, glabrescent, base tapering, apex rounded. Seeds many per locule, obliquely ovate, flat, wing large and thin, brown, smooth.
Forested slopes; 1200-1700 m. S Yunnan [Bangladesh, Bhutan, India, Laos, Malaysia, Myanmar, Nepal, Thailand].
Pterospermum acerifolium is grown as an ornamental.
（责任编辑：徐晔春）
学名（Scientific Name）：Pterospermum acerifolium Willd.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Pterospermum diversifolium Blume Cavanilla acerifolia (L.) J.F.Gmel. Pentapetes acerifolia L. Pterospermadendron acerifolium (L.) Kuntze
科属（Family & Genus）：梧桐科（Sterculiaceae）翅子树属
形态特征（Description）：大乔木，树皮光滑，小枝的幼嫩部分密被茸毛。叶大，革质，近圆形或矩圆形，全缘、浅裂或有粗齿，长24-34厘米，宽14-29厘米，顶端截形或近圆形，并有浅裂或突尖，基部心形，上面被稀疏的毛或几无毛，下面密被淡黄色或带灰色的星状茸毛，基生脉7-12条，叶脉在下面凸出；叶柄粗壮，有条纹；托叶条裂，早落；小苞片条裂或掌状深裂。花单生，白色，芳香；萼片5枚，条状矩圆形，长9厘米，宽7毫米，外面密被黄褐色星状茸毛，内面被白色长柔毛；花瓣5片，条状矩圆形，略成楔形，宽7毫米，比萼稍短，无毛；退化雄蕊棒状，有毛；雄蕊15枚，每3枚集合成群与退化雄蕊互生；子房矩圆形，有5个棱角，5室，每室有胚珠多个。蒴果木质，矩圆状圆筒形，具柄，有5个不明显的凹陷面或浅沟，长10-15厘米，宽5-5.5厘米，初被淡红褐色茸毛，后无毛，顶端钝，基部渐狭，每室有种子多个；种子斜卵形，压扁状，具翅，翅大而薄，褐色，光滑。
分布（Distribution）：产云南南部勐海、勐仑等地，生于海拔1200-1640米的山坡上。
用途（Use）：
引自中国植物志英文版：FOC Vol. 12 Page 327, 328
Pterospermum acerifolium Willdenow, Sp. Pl. 3: 729. 1800.
翅子树 chi zi shu| Sterculiaceae | Pterospermum
Big trees; bark smooth. Branchlets densely velutinous when young. Stipules linear; petiole robust, striate; leaf blade nearly orbicular or oblong, sometimes ± lobed, 24-34 × 14-29 cm, leathery, abaxially densely yellowish and gray stellate velutinous, adaxially sparsely hairy or glabrous, base cordate, margin entire or crenate, apex truncate, nearly rounded, or pointed; juvenile leaves palmately lobed, peltate. Flowers solitary, fragrant; epicalyx lobes fimbriate or palmately divided. Sepals linear-oblong, ca. 9 × 0.7 cm, abaxially densely yellow-brown stellate velutinous, adaxially white villous. Petals white, linear-oblong, slightly cuneate, slightly shorter than sepals, glabrous. Staminodes clavate, hairy. Ovary oblong, 5-angular; ovules many per locule. Capsule woody, cylindrical, stipitate, obscurely 5-grooved, 10-15 × 5-5.5 cm, reddish brown velutinous, glabrescent, base tapering, apex rounded. Seeds many per locule, obliquely ovate, flat, wing large and thin, brown, smooth.
Forested slopes; 1200-1700 m. S Yunnan [Bangladesh, Bhutan, India, Laos, Malaysia, Myanmar, Nepal, Thailand].
Pterospermum acerifolium is grown as an ornamental.
（责任编辑：徐晔春）
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