长序山芝麻Helicteres elongata Wall.
长序山芝麻Helicteres elongata Wall.
5.长序山芝麻（植物分类学报）野芝麻（云南）图版45：11-13
Helicteres elongata Wall. Cat. 1845. 1828, nom. nud. ; Mast. in Hook. f. Fl. Brit. Tnd. 1: 365. 1874; Craib Fl. Siam. Enum. 1: 170. 1825; Tardieu-Blot in Humbert Suppl. Fl. Gen. Indo-Chine 1: 421-422. 1945; 云南省植物研究所, 云南经济植物186, 图142, 1972.
灌木，高约1米；小枝甚柔弱，散生，被星状短柔毛。叶矩圆状披针形或矩圆状卵形，长5-11厘米，宽2.5-3.5厘米，顶端渐尖，基部圆形而偏斜，边缘有不规则的锯齿，上面被稀疏的星状短柔毛，下面被星状短柔毛及长柔毛；叶柄长约1厘米；托叶条形，长5毫米，早落。聚伞花序伸长，顶生或腋生，几与叶等长，有多数花；小苞片条形；萼管状钟形，长约5毫米，5裂，裂片三角状披针形，宿存，被短柔毛；花瓣5片，黄色，下面的花瓣只有一个耳状附属体和在瓣片上有一行毛；雌雄蕊柄有毛，雄蕊10枚；子房5室，被毛，每室约有胚珠10个。蒴果长圆筒形，顶端尖锐，长2-3.5厘米，密被灰黄色星状毛。花期6-10月。
产云南南部（富宁、金平、屏边、思茅等地）和广西（横县、都安、田林）。常生于海拔190-1600-米的路边，村边的荒地上或干旱的草坡上。泰国、印度、缅甸也有分布。
本种的茎皮纤维可制绳索及人造棉等。全株可药用，可治发热症。
《Flora of China》 Vol. 12 (2007)
Helicteres elongata Wallich ex Masters
长序山芝麻 chang xu shan zhi ma
Shrubs, ca. 1 m tall. Branchlets very slender, stellate puberulent; upper leaves of fertile shoots reduced to a lax thyrse. Stipules linear, ca. 5 mm, caducous; petiole 0.6-1.3 cm; leaf blade oblong-lanceolate or oblong-ovate, 5-11 × (2-)2.5-3.5(-4) cm, stellate puberulent and villous abaxially, sparsely stellate adaxially, base obliquely rounded, margin irregularly dentate, apex acuminate. Inflorescence racemelike, axillary or terminal, as long as or longer than leaves, many-flowered. Epicalyx lobes linear. Calyx tubelike campanulate, ca. 5 mm, 5-lobed, lobes triangular, persistent, puberulent. Petals 5, yellow, 1 petal with auriculate appendix and central line of hairs. Androgynophore hairy. Stamens 10. Ovary 5-locular, hairy; ovules ca. 10 in each locule. Capsule long cylindric, apex acute, 2-3.8 cm, densely gray-yellow shaggy. Fl. Jun-Oct.
Dry grasslands, roadsides; 200-1600 m. NW and W Guangxi, S and SE Yunnan [Bangladesh, ?Bhutan, India (Darjeeling, ?Sikkim), Myanmar, Thailand].
别名：美玉占聋;山芝麻;长角山芝麻;野芝麻棵;香芝麻棵;野芝麻;呀呼领;长叶山芝麻;野山芝麻;
科名：梧桐科 Sterculiaceae
属名：山芝麻属 Helicteres
5.长序山芝麻（植物分类学报）野芝麻（云南）图版45：11-13
Helicteres elongata Wall. Cat. 1845. 1828, nom. nud. ; Mast. in Hook. f. Fl. Brit. Tnd. 1: 365. 1874; Craib Fl. Siam. Enum. 1: 170. 1825; Tardieu-Blot in Humbert Suppl. Fl. Gen. Indo-Chine 1: 421-422. 1945; 云南省植物研究所, 云南经济植物186, 图142, 1972.
灌木，高约1米；小枝甚柔弱，散生，被星状短柔毛。叶矩圆状披针形或矩圆状卵形，长5-11厘米，宽2.5-3.5厘米，顶端渐尖，基部圆形而偏斜，边缘有不规则的锯齿，上面被稀疏的星状短柔毛，下面被星状短柔毛及长柔毛；叶柄长约1厘米；托叶条形，长5毫米，早落。聚伞花序伸长，顶生或腋生，几与叶等长，有多数花；小苞片条形；萼管状钟形，长约5毫米，5裂，裂片三角状披针形，宿存，被短柔毛；花瓣5片，黄色，下面的花瓣只有一个耳状附属体和在瓣片上有一行毛；雌雄蕊柄有毛，雄蕊10枚；子房5室，被毛，每室约有胚珠10个。蒴果长圆筒形，顶端尖锐，长2-3.5厘米，密被灰黄色星状毛。花期6-10月。
产云南南部（富宁、金平、屏边、思茅等地）和广西（横县、都安、田林）。常生于海拔190-1600-米的路边，村边的荒地上或干旱的草坡上。泰国、印度、缅甸也有分布。
本种的茎皮纤维可制绳索及人造棉等。全株可药用，可治发热症。
《Flora of China》 Vol. 12 (2007)
Helicteres elongata Wallich ex Masters
长序山芝麻 chang xu shan zhi ma
Shrubs, ca. 1 m tall. Branchlets very slender, stellate puberulent; upper leaves of fertile shoots reduced to a lax thyrse. Stipules linear, ca. 5 mm, caducous; petiole 0.6-1.3 cm; leaf blade oblong-lanceolate or oblong-ovate, 5-11 × (2-)2.5-3.5(-4) cm, stellate puberulent and villous abaxially, sparsely stellate adaxially, base obliquely rounded, margin irregularly dentate, apex acuminate. Inflorescence racemelike, axillary or terminal, as long as or longer than leaves, many-flowered. Epicalyx lobes linear. Calyx tubelike campanulate, ca. 5 mm, 5-lobed, lobes triangular, persistent, puberulent. Petals 5, yellow, 1 petal with auriculate appendix and central line of hairs. Androgynophore hairy. Stamens 10. Ovary 5-locular, hairy; ovules ca. 10 in each locule. Capsule long cylindric, apex acute, 2-3.8 cm, densely gray-yellow shaggy. Fl. Jun-Oct.
Dry grasslands, roadsides; 200-1600 m. NW and W Guangxi, S and SE Yunnan [Bangladesh, ?Bhutan, India (Darjeeling, ?Sikkim), Myanmar, Thailand].