勐腊核果木查看源代码讨论查看历史
勐腊核果木 |
中文学名:勐腊核果木 拉丁学名:Drypetes hoaensis Gagn. 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:原始花被亚纲 目:大戟目 亚 目:大戟亚目 科:大戟科 亚 科:叶下珠亚科 族:核果木族 属:核果木属 种:勐腊核果木 分布区域:中国云南南部, |
勐腊核果木(měng là hé guǒ mù),学名 Drypetes hoaensis Gagn.,为大戟科、核果木属植物。产于云南南部,生于山地沟谷密林中。分布于泰国和越南。模式标本采自越南登巴。 [1]
勐腊核果木形态特征
乔木,高达20米;枝条淡灰色,无毛。叶片革质,卵形至椭圆形,长6-11厘米,宽 2-5厘米,顶端具短尾尖,有时钝,基部宽楔形至圆,两侧不相等,边缘具疏浅圆齿;
侧脉 每边9-13条,斜升至近叶缘,网脉干时两面均明显;叶柄长5-10毫米;托叶小,卵状三 角形,常早落。
雄花:3-5朵簇生于叶腋,花梗长4毫米;萼片4,大小不相等,椭圆形,长2-3毫米,边缘有睫毛;雄蕊12-15枚,花丝丝状,花药长圆形;无退化雌蕊;雌花:1-2朵腋生;
萼片与雄花的相同;子房卵圆形,l室。核果卵珠状,长1-2厘米,直径0.8-1.5厘米,无毛,1室,l种子;果梗长约6毫米。 [2]
Drypetes hoaensis Gagnep. in Bull. Sot, Bot, France 71: 259, 1924 et in Lec. Fl. Gen. Indo-Chine 5: 570, fig. 70 (1). 1927; Airy Shaw in Kew Bull. 26 (2): 255. 1972: P. T. Li in Acta Phytotax. Sin. 26: 59. 1988.
Trees up to 20 m tall; branches ash gray, glabrous. Stipules small, ovate-triangular, 1.2-1.5 × ca. 0.8 mm, usually caducous; petiole 5-10 mm; leaf blade ovate to elliptic, 6-11 × 2-5 cm, leathery, base broadly cuneate to rounded, oblique, margin sparsely shallowly crenate, apex shortly caudate, sometimes obtuse; lateral veins 9-13 pairs, obliquely ascending to margins, reticulate veins prominent on both surfaces. Male flowers 3-5-clustered; pedicels ca. 4 mm; sepals 4, unequal, elliptic, 2-3 mm, margins ciliate; stamens 12-15; filaments filamentous; anthers oblong; rudimentary ovary absent. Female flowers solitary or paired; sepals as in male; ovary ovoid, 1-celled. Fruiting pedicels ca. 6 mm; drupes ovoid, 1-2 × 0.8-1.5 cm, glabrous, 1-celled, 1-seeded. Fl. May-Aug, fr. Jul-Oct.
Open evergreen forests on rocky limestone hills; ca. 500 m. S Yunnan [Thailand, Vietnam].
Material from Thailand appears to differ from Yunnan material by the inconspicuous reticulate veins.
勐腊核果木生长环境
勐腊核果木生长于山地沟谷密林中。
勐腊核果木分布范围
勐腊核果木参考文献
勐腊核果木(植物分类学报)
Drypetes hoaensis Gagnep. in Bull. Sot, Bot, France 71: 259, 1924 et in Lec. Fl. Gen. Indo-Chine 5: 570, fig. 70 (1). 1927; Airy Shaw in Kew Bull. 26 (2): 255. 1972: P. T. Li in Acta Phytotax. Sin. 26: 59. 1988.