无柄扁担杆Grewia sessiliflora Gagnep.
无柄扁担杆Grewia sessiliflora Gagnep.
19.无柄扁担杆（海南植物志）图版24：12-15
Grewia sessiliflora Gagnep. in Lecomte, Not. Syst. 1:167. 1910: in Fl. Gen. Indo-Chine 1:546. 1911; 海南植物志2:60. 1965; 中国高等植物图鉴2:798. 图3325, 1972.
灌木；嫩枝被黄褐色软茸毛，三年生老枝仍有残留茸毛。叶纸质，三角状披针形，长6-10厘米，宽3-5厘米，先端狭窄而渐尖，基部偏斜圆形或微心形，上面有星状软茸毛，下面密被黄褐色软茸毛，三出脉的两边脉到达叶片中部，离边缘7-13毫米，中脉有侧脉3-4对，边缘有锯齿；叶柄长1-3毫米。聚伞花序1-2枝腋生，长4-5厘米，花序柄长3-4厘米，被茸毛；苞片线形，长7-8毫米，被茸毛；萼片披针形，长8-9毫米，宽1.5毫米，外面有茸毛，内面无毛；花瓣长4-5毫米；雄蕊比花瓣略长；子房被茸毛，花柱超出雄蕊。核果双球形，发亮，有稀疏星状毛。花期6-7月。
产于广东、广西南部。生长于低海拔的次生林中。越南北部有分布。模式标本采自越南北部的凉山。
本种的主要识别特征是叶三角状披针形，被黄褐色软茸毛，花序长4-5厘米，是本属当中具有最长花序的种类。
《Flora of China》 Vol. 12 (2007)
Grewia sessiliflora Gagnepain
无柄扁担杆 wu bing bian dan gan
Shrubs. Branches and branchlets softly yellow-brown tomentose. Petiole 1-3 mm; leaf blade triangular-lanceolate, 6-10 × 3-5 cm, abaxially densely softly yellow-brown tomentose, adaxially softly stellate tomentose, lateral basal veins to 1/2 as long as leaf blade, 7-13 mm from margin, lateral veins 3-4 pairs, base oblique, rounded or shallowly cordate, margin serrate, apex narrowly acuminate. Cymes 1 or 2 per leaf axil, 4-5 cm; peduncle 3-4 cm, tomentose. Bracts filiform, 7-8 mm, tomentose. Sepals lanceolate, 8-9 × ca. 1.5 mm, abaxially tomentose, adaxially glabrous. Petals 4-5 mm. Stamens slightly longer than petals. Ovary tomentose; style longer than stamens. Drupe 2-lobed, lobes globose, glossy, sparsely stellate hairy. Fl. Jun-Jul.
Secondary forests at low elevations. S Guangdong, Guangxi [Laos, N Thailand, N Vietnam].
The diagnostic features of this species include the triangular-lanceolate leaves covered with yellow-brown soft indumentum and the long cymes; at 4-5 cm, these are the longest cymes in the genus in China.
别名：无柄扁担干;无柄解宝叶;
科名：椴树科 Tiliaceae
属名：扁担杆属 Grewia
19.无柄扁担杆（海南植物志）图版24：12-15
Grewia sessiliflora Gagnep. in Lecomte, Not. Syst. 1:167. 1910: in Fl. Gen. Indo-Chine 1:546. 1911; 海南植物志2:60. 1965; 中国高等植物图鉴2:798. 图3325, 1972.
灌木；嫩枝被黄褐色软茸毛，三年生老枝仍有残留茸毛。叶纸质，三角状披针形，长6-10厘米，宽3-5厘米，先端狭窄而渐尖，基部偏斜圆形或微心形，上面有星状软茸毛，下面密被黄褐色软茸毛，三出脉的两边脉到达叶片中部，离边缘7-13毫米，中脉有侧脉3-4对，边缘有锯齿；叶柄长1-3毫米。聚伞花序1-2枝腋生，长4-5厘米，花序柄长3-4厘米，被茸毛；苞片线形，长7-8毫米，被茸毛；萼片披针形，长8-9毫米，宽1.5毫米，外面有茸毛，内面无毛；花瓣长4-5毫米；雄蕊比花瓣略长；子房被茸毛，花柱超出雄蕊。核果双球形，发亮，有稀疏星状毛。花期6-7月。
产于广东、广西南部。生长于低海拔的次生林中。越南北部有分布。模式标本采自越南北部的凉山。
本种的主要识别特征是叶三角状披针形，被黄褐色软茸毛，花序长4-5厘米，是本属当中具有最长花序的种类。
《Flora of China》 Vol. 12 (2007)
Grewia sessiliflora Gagnepain
无柄扁担杆 wu bing bian dan gan
Shrubs. Branches and branchlets softly yellow-brown tomentose. Petiole 1-3 mm; leaf blade triangular-lanceolate, 6-10 × 3-5 cm, abaxially densely softly yellow-brown tomentose, adaxially softly stellate tomentose, lateral basal veins to 1/2 as long as leaf blade, 7-13 mm from margin, lateral veins 3-4 pairs, base oblique, rounded or shallowly cordate, margin serrate, apex narrowly acuminate. Cymes 1 or 2 per leaf axil, 4-5 cm; peduncle 3-4 cm, tomentose. Bracts filiform, 7-8 mm, tomentose. Sepals lanceolate, 8-9 × ca. 1.5 mm, abaxially tomentose, adaxially glabrous. Petals 4-5 mm. Stamens slightly longer than petals. Ovary tomentose; style longer than stamens. Drupe 2-lobed, lobes globose, glossy, sparsely stellate hairy. Fl. Jun-Jul.
Secondary forests at low elevations. S Guangdong, Guangxi [Laos, N Thailand, N Vietnam].
The diagnostic features of this species include the triangular-lanceolate leaves covered with yellow-brown soft indumentum and the long cymes; at 4-5 cm, these are the longest cymes in the genus in China.