勐臘核果木檢視原始碼討論檢視歷史
勐臘核果木 |
中文學名:勐臘核果木 拉丁學名:Drypetes hoaensis Gagn. 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:大戟目 亞 目:大戟亞目 科:大戟科 亞 科:葉下珠亞科 族:核果木族 屬:核果木屬 種:勐臘核果木 分布區域:中國雲南南部, |
勐臘核果木(měng là hé guǒ mù),學名 Drypetes hoaensis Gagn.,為大戟科、核果木屬植物。產於雲南南部,生于山地溝谷密林中。分布於泰國和越南。模式標本采自越南登巴。 [1]
勐臘核果木形態特徵
喬木,高達20米;枝條淡灰色,無毛。葉片革質,卵形至橢圓形,長6-11厘米,寬 2-5厘米,頂端具短尾尖,有時鈍,基部寬楔形至圓,兩側不相等,邊緣具疏淺圓齒;
側脈 每邊9-13條,斜升至近葉緣,網脈干時兩面均明顯;葉柄長5-10毫米;托葉小,卵狀三 角形,常早落。
雄花:3-5朵簇生於葉腋,花梗長4毫米;萼片4,大小不相等,橢圓形,長2-3毫米,邊緣有睫毛;雄蕊12-15枚,花絲絲狀,花葯長圓形;無退化雌蕊;雌花:1-2朵腋生;
萼片與雄花的相同;子房卵圓形,l室。核果卵珠狀,長1-2厘米,直徑0.8-1.5厘米,無毛,1室,l種子;果梗長約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.
勐臘核果木生長環境
勐臘核果木生長于山地溝谷密林中。
勐臘核果木分布範圍
勐臘核果木參考文獻
勐臘核果木(植物分類學報)
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.