白颜树Gironniera subaequalis
中文名（Chinese Name）：白颜树
学名（Scientific Name）：Gironniera subaequalis Planch.
英文名（English Common Name）：
别名（Chinese Common Name）：大叶白颜树
异名（Synonym）：Gironniera nervosa var. subaequalis (Planch.) Kurz Gironniera chinensis Benth. Gironniera amboinensis Lauterb. Gironniera blumei Gand. Gironniera borneensis Gand. Gironniera costata Miq. Gironniera ferruginea Gand. Gironniera korthalsii Gand. Gironniera longifolia Craib Gironniera mollissima Gagnep. Gironniera subaequalis var. brevistylis Blume Gironniera subaequalis var. papuana J.J.Sm. Gironniera subaequalis var. scabrida Blume Gironniera subaequalis var. serrulata Blume Gironniera sumatrana Gand. Helminthospermum scabridum Thwaites Sponia annulata Teijsm. & Binn.
科属（Family & Genus）：榆科（Ulmaceae）白颜树属
形态特征（Description）：乔木，高10-20米，稀达30米，胸径25-50厘米，稀达100厘米；树皮灰或深灰色，较平滑；小枝黄绿色，疏生黄褐色长粗毛。叶革质，椭圆形或椭圆状矩圆形，长10-25厘米，宽5-10厘米，先端短尾状渐尖，基部近对称，圆形至宽楔形，边缘近全缘，仅在顶部疏生浅钝锯齿，叶面亮绿色，平滑无毛，叶背浅绿，稍粗糙，在中脉和侧脉上疏生长糙伏毛，在细脉上疏生细糙毛，侧脉8-12对；叶柄长6-12毫米，疏生长糙伏毛；托叶对成，鞘包着芽，披针形，长1-2.5厘米，外面被长糙伏毛，脱落后在枝上留有一环托叶痕。雌雄异株，聚伞花序成对腋生，序梗上疏生长糙伏毛，雄的多分枝，雌的分枝较少，成总状；雄花直径约2毫米，花被片5，宽椭圆形，中央部分增厚，边缘膜质，外面被糙毛，花药外面被细糙毛。核果具短梗，阔卵状或阔椭圆状，直径4-5毫米，侧向压扁，被贴生的细糙毛，内果皮骨质，两侧具2钝棱，熟时桔红色，具宿存的花柱及花被。花期2-4月，果期7-11月。
分布（Distribution）：产广东、海南、广西和云南，生于海拔100-800米山谷、溪边的湿润林中。印度、斯里兰卡、缅甸、中南半岛、马来半岛及印度尼西亚也有分布。
用途（Use）：木材供制一般家具，易传音，宜作木鼓等乐器；枝皮纤维可制人造棉；叶药用治寒湿。
引自中国植物志英文版：FOC Vol. 5 Page 11
Gironniera subaequalis Planchon, Ann. Sci. Nat., Bot., sér. 3. 10: 339. 1848.
白颜树 bai yan shu| Ulmaceae | Gironniera
Gironniera chinensis Bentham; G. nervosa Planchon v ar. subaequalis (Planchon) Kurz.
Trees, 10-20(-30) m tall, d.b.h. 25-50(-100) cm, dioecious. Bark gray to dark gray, smooth. Branchlets yellowish green or brown, covered with hirsute hairs. Stipules opposite, lanceolate, 1-2.7 cm, abaxially strigose. Petiole 4-12 mm, strigose; leaf blade elliptic to elliptic-oblong, 10-25 × 4.5-10 cm, leathery, abaxially green, scabridulous, and with appressed hairs on major veins, adaxially pale green and glabrous, base ± symmetric, margin bluntly serrate or subentire, apex shortly caudate-acuminate; secondary veins 8-12 on each side of midvein. Rachis sparsely strigose. Male inflorescences highly branched. Female inflorescences racemose. Male flowers: ca. 2 mm in diam., tepals and anthers strigose. Infructescences with 1-5 drupes. Drupes subsessile or short-stalked, broadly ovoid to broadly ellipsoid, 4-8 mm in diam., laterally compressed; perianth and style persistent; endocarp reddish orange when mature, with 2 obtuse ribs. Fl. Feb-Apr, fr. most of the year.
Valleys, beside streams; 100-800 m. Guangdong, Guangxi, Hainan, Yunnan [Cambodia, Laos, Malaysia, Myanmar, Thailand, Vietnam].
The wood is used for furniture and other purposes, the bark fiber is used for manufacturing staple rayon, and the leaves are used medicinally.
（责任编辑：徐晔春）
学名（Scientific Name）：Gironniera subaequalis Planch.
英文名（English Common Name）：
别名（Chinese Common Name）：大叶白颜树
异名（Synonym）：Gironniera nervosa var. subaequalis (Planch.) Kurz Gironniera chinensis Benth. Gironniera amboinensis Lauterb. Gironniera blumei Gand. Gironniera borneensis Gand. Gironniera costata Miq. Gironniera ferruginea Gand. Gironniera korthalsii Gand. Gironniera longifolia Craib Gironniera mollissima Gagnep. Gironniera subaequalis var. brevistylis Blume Gironniera subaequalis var. papuana J.J.Sm. Gironniera subaequalis var. scabrida Blume Gironniera subaequalis var. serrulata Blume Gironniera sumatrana Gand. Helminthospermum scabridum Thwaites Sponia annulata Teijsm. & Binn.
科属（Family & Genus）：榆科（Ulmaceae）白颜树属
形态特征（Description）：乔木，高10-20米，稀达30米，胸径25-50厘米，稀达100厘米；树皮灰或深灰色，较平滑；小枝黄绿色，疏生黄褐色长粗毛。叶革质，椭圆形或椭圆状矩圆形，长10-25厘米，宽5-10厘米，先端短尾状渐尖，基部近对称，圆形至宽楔形，边缘近全缘，仅在顶部疏生浅钝锯齿，叶面亮绿色，平滑无毛，叶背浅绿，稍粗糙，在中脉和侧脉上疏生长糙伏毛，在细脉上疏生细糙毛，侧脉8-12对；叶柄长6-12毫米，疏生长糙伏毛；托叶对成，鞘包着芽，披针形，长1-2.5厘米，外面被长糙伏毛，脱落后在枝上留有一环托叶痕。雌雄异株，聚伞花序成对腋生，序梗上疏生长糙伏毛，雄的多分枝，雌的分枝较少，成总状；雄花直径约2毫米，花被片5，宽椭圆形，中央部分增厚，边缘膜质，外面被糙毛，花药外面被细糙毛。核果具短梗，阔卵状或阔椭圆状，直径4-5毫米，侧向压扁，被贴生的细糙毛，内果皮骨质，两侧具2钝棱，熟时桔红色，具宿存的花柱及花被。花期2-4月，果期7-11月。
分布（Distribution）：产广东、海南、广西和云南，生于海拔100-800米山谷、溪边的湿润林中。印度、斯里兰卡、缅甸、中南半岛、马来半岛及印度尼西亚也有分布。
用途（Use）：木材供制一般家具，易传音，宜作木鼓等乐器；枝皮纤维可制人造棉；叶药用治寒湿。
引自中国植物志英文版：FOC Vol. 5 Page 11
Gironniera subaequalis Planchon, Ann. Sci. Nat., Bot., sér. 3. 10: 339. 1848.
白颜树 bai yan shu| Ulmaceae | Gironniera
Gironniera chinensis Bentham; G. nervosa Planchon v ar. subaequalis (Planchon) Kurz.
Trees, 10-20(-30) m tall, d.b.h. 25-50(-100) cm, dioecious. Bark gray to dark gray, smooth. Branchlets yellowish green or brown, covered with hirsute hairs. Stipules opposite, lanceolate, 1-2.7 cm, abaxially strigose. Petiole 4-12 mm, strigose; leaf blade elliptic to elliptic-oblong, 10-25 × 4.5-10 cm, leathery, abaxially green, scabridulous, and with appressed hairs on major veins, adaxially pale green and glabrous, base ± symmetric, margin bluntly serrate or subentire, apex shortly caudate-acuminate; secondary veins 8-12 on each side of midvein. Rachis sparsely strigose. Male inflorescences highly branched. Female inflorescences racemose. Male flowers: ca. 2 mm in diam., tepals and anthers strigose. Infructescences with 1-5 drupes. Drupes subsessile or short-stalked, broadly ovoid to broadly ellipsoid, 4-8 mm in diam., laterally compressed; perianth and style persistent; endocarp reddish orange when mature, with 2 obtuse ribs. Fl. Feb-Apr, fr. most of the year.
Valleys, beside streams; 100-800 m. Guangdong, Guangxi, Hainan, Yunnan [Cambodia, Laos, Malaysia, Myanmar, Thailand, Vietnam].
The wood is used for furniture and other purposes, the bark fiber is used for manufacturing staple rayon, and the leaves are used medicinally.
（责任编辑：徐晔春）
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