截裂翅子树Pterospermum truncatolobatum Gagnep.
截裂翅子树Pterospermum truncatolobatum Gagnep.
4.截裂翅子树（植物分类学报）图版50：4-7
Pterospermum truncatolobatum Gagnep. ,in Lecte Not. Syst. 1: 84. 1909 et in ibidem Fl. Gen. Indo-Chine 1: 498-499. 1911; Hand.-Mazz. Symb. Sin. 7 (3): 613. 1933.
乔木，高达16米；树皮黑色，有纵裂纹；小枝幼嫩部分密被黄褐色星状绒毛，后变为灰白色或淡黄灰色星状绒毛或几无毛。叶革质，矩圆状倒梯形，长8-16厘米，宽3.5-11厘米，顶端截形并有3-5裂，中间的裂片急尖或渐尖，长1-2厘米，叶的基部心形或斜心形，上面无毛或仅在主脉上略被毛，下面密被灰白色和黄褐色星状绒毛，基生脉5-7条；托叶掌状3-5条裂，密被毛，早落；叶柄粗壮，长约4-12毫米。花腋生，单生，几无柄；小苞片条状裂；萼分裂几至基部，萼片5枚，较厚，条形，长4.5-6.5厘米，宽4毫米，外面密被褐色绒毛，内面被银白色长柔毛；花瓣5片，条状镰刀形，长3-6厘米，宽4-5毫米，基部渐狭，无毛；退化雄蕊5枚，线状，长5厘米，无毛；雄蕊15枚，长3.5厘米，每3枚集合成群与退化雄蕊互生；子房卵形，被毛。蒴果木质，卵圆形或卵状矩圆形，有明显的5棱和5条很深的沟，外形很像“杨桃”，长达12厘米，宽约7厘米，基部收缩成长2-3厘米宽1厘米的柄并与长约8毫米的果柄连接，外面密被褐色星状绒毛，有或无瘤状突起，每室有种子6-10个，排成2列；种子具翅，连翅长4-5.5厘米，翅膜质，条形，长达4. 4厘米，顶端钝或截形。花期7月。
产云南金平和广西宁明、龙州等地。生于海拔300-520米的石灰岩山上密林中。越南北部也有分布。
《Flora of China》 Vol. 12 (2007)
Pterospermum truncatolobatum Gagnepain
截裂翅子树 jie lie chi zi shu
Trees, to 16 m tall; bark black, striate. Branchlets densely yellow-brown stellate tomentose when young, becoming gray-white or yellowish gray stellate tomentose or nearly glabrous. Stipules palmately 3-5-fimbriate, densely hairy, caducous; petiole robust, 4-12 mm; leaf blade oblong-obovate in outline, usually irregularly lobed, 8-16 × 3.5-11 cm, leathery, abaxially densely gray-white or yellow-brown stellate tomentose, adaxially glabrous or minutely hairy along midrib, base cordate or obliquely cordate, apex truncate and 3-5-lobed, central lobe acute or acuminate, 1-2 cm. Flowers solitary, nearly sessile; epicalyx lobes fimbriate. Sepals linear, relatively thick, 4.5-6.5 × ca. 0.4 cm, abaxially densely brown tomentose, adaxially silvery white villous. Petals linear-falcate, 3-6 × 0.4-0.5 cm, base tapering. Stamens ca. 3.5 cm; staminodes filiform, ca. 5 cm, glabrous. Ovary ovoid, hairy. Fruiting pedicel to 8 mm; capsule woody, ovoid or ovoid-cylindrical, prominently 5-angular and 5-grooved, ca. 12 × 7 cm, densely brown stellate tomentose, verrucose or not, base narrowed into 2-3 × ca. 1 cm stipe. Seeds 6-10 per locule, in 2 rows, 4-5.5 cm including wing, wing linear, up to 4.4 cm, apex obtuse or truncate. Fl. Jul.
Dense forests on limestone; 300-500 m. SE Guangxi (Ningming, Longzhou), SE Yunnan (Jinping) [N Vietnam].
别名：截裂翻白叶树;米仙;堆裂翻白叶树;棱果翻白叶树;黄木树;
科名：梧桐科 Sterculiaceae
属名：翅子树属 Pterospermum
4.截裂翅子树（植物分类学报）图版50：4-7
Pterospermum truncatolobatum Gagnep. ,in Lecte Not. Syst. 1: 84. 1909 et in ibidem Fl. Gen. Indo-Chine 1: 498-499. 1911; Hand.-Mazz. Symb. Sin. 7 (3): 613. 1933.
乔木，高达16米；树皮黑色，有纵裂纹；小枝幼嫩部分密被黄褐色星状绒毛，后变为灰白色或淡黄灰色星状绒毛或几无毛。叶革质，矩圆状倒梯形，长8-16厘米，宽3.5-11厘米，顶端截形并有3-5裂，中间的裂片急尖或渐尖，长1-2厘米，叶的基部心形或斜心形，上面无毛或仅在主脉上略被毛，下面密被灰白色和黄褐色星状绒毛，基生脉5-7条；托叶掌状3-5条裂，密被毛，早落；叶柄粗壮，长约4-12毫米。花腋生，单生，几无柄；小苞片条状裂；萼分裂几至基部，萼片5枚，较厚，条形，长4.5-6.5厘米，宽4毫米，外面密被褐色绒毛，内面被银白色长柔毛；花瓣5片，条状镰刀形，长3-6厘米，宽4-5毫米，基部渐狭，无毛；退化雄蕊5枚，线状，长5厘米，无毛；雄蕊15枚，长3.5厘米，每3枚集合成群与退化雄蕊互生；子房卵形，被毛。蒴果木质，卵圆形或卵状矩圆形，有明显的5棱和5条很深的沟，外形很像“杨桃”，长达12厘米，宽约7厘米，基部收缩成长2-3厘米宽1厘米的柄并与长约8毫米的果柄连接，外面密被褐色星状绒毛，有或无瘤状突起，每室有种子6-10个，排成2列；种子具翅，连翅长4-5.5厘米，翅膜质，条形，长达4. 4厘米，顶端钝或截形。花期7月。
产云南金平和广西宁明、龙州等地。生于海拔300-520米的石灰岩山上密林中。越南北部也有分布。
《Flora of China》 Vol. 12 (2007)
Pterospermum truncatolobatum Gagnepain
截裂翅子树 jie lie chi zi shu
Trees, to 16 m tall; bark black, striate. Branchlets densely yellow-brown stellate tomentose when young, becoming gray-white or yellowish gray stellate tomentose or nearly glabrous. Stipules palmately 3-5-fimbriate, densely hairy, caducous; petiole robust, 4-12 mm; leaf blade oblong-obovate in outline, usually irregularly lobed, 8-16 × 3.5-11 cm, leathery, abaxially densely gray-white or yellow-brown stellate tomentose, adaxially glabrous or minutely hairy along midrib, base cordate or obliquely cordate, apex truncate and 3-5-lobed, central lobe acute or acuminate, 1-2 cm. Flowers solitary, nearly sessile; epicalyx lobes fimbriate. Sepals linear, relatively thick, 4.5-6.5 × ca. 0.4 cm, abaxially densely brown tomentose, adaxially silvery white villous. Petals linear-falcate, 3-6 × 0.4-0.5 cm, base tapering. Stamens ca. 3.5 cm; staminodes filiform, ca. 5 cm, glabrous. Ovary ovoid, hairy. Fruiting pedicel to 8 mm; capsule woody, ovoid or ovoid-cylindrical, prominently 5-angular and 5-grooved, ca. 12 × 7 cm, densely brown stellate tomentose, verrucose or not, base narrowed into 2-3 × ca. 1 cm stipe. Seeds 6-10 per locule, in 2 rows, 4-5.5 cm including wing, wing linear, up to 4.4 cm, apex obtuse or truncate. Fl. Jul.
Dense forests on limestone; 300-500 m. SE Guangxi (Ningming, Longzhou), SE Yunnan (Jinping) [N Vietnam].