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沙巴酸脚杆

沙巴酸脚杆

中文学名:沙巴酸脚杆

拉丁学名:Medinilla

petelotii Merr.

界:植物界

门:被子植物门

纲:双子叶植物纲

目:桃金娘目

科:野牡丹科

属:酸脚杆属

沙巴酸脚杆,为桃金娘目野牡丹科酸脚杆属植物。产云南贡山及滇东南,海拔1000—1400米的山谷、山坡、河边密林中树上附生。有时于林下。越南亦有。 [1]

目录

沙巴酸脚杆形态特征

描述字段:灌木,高40—150厘米,分枝多,具匍匐茎,逐节生根,常附生于树上;茎直立或弯曲上升,四棱形,幼时棱上具明显的狭翅,具皮孔,以后近圆柱形,具密皮孔而粗糙。

叶片坚纸质或略厚,倒卵形或椭圆形,顶端渐尖,基部楔形,微下延,长(6.5-)11—16厘米,宽(2.2-)4.5—8厘米,全缘,离基5出脉,其最外的2脉近叶基部,叶面密布小窝点,无毛,脉微隆起,背面被秕糠状小突起,脉隆起;叶柄短,长约5毫米,略具翅。

聚伞花序,生于无叶老茎上或匍匐茎上,有花3-7朵,总梗长约1.2厘米,无毛;苞片及小苞片成对,广卵形,被疏秕糠;花梗长3—7毫米;花萼漏斗形,钝四棱形,长6—7毫米,被批糠及小突起,裂片浅波状,顶端具小刺尖头;花瓣粉红色,近圆形,顶端圆形,长8—9毫米;雄蕊等长,花丝与花药等长,长约4毫米,花药基部具线形突起,长达花药的1/2,药隔膨大,下延呈短距;子房卵形,无冠。

浆果坛形,长1.8厘米,宽1.2厘米,果梗长2—2.5厘米;种子倒卵形,光滑。花期8—10月,果期5—6月。

Medinilla petelotii Merr. in Univ. Cal. Publ. Bot. 13: 137. 1926; S. Y. Hu in Journ. Arn. Arb. 33: 169. 1952; 云南植物志2: 132. 1979; C. Chen植物分类学报21 (4): 421. 1983——M. tsaii H. L. Li 1. c. 25: 39. 1944.

Shrubs 40-150 m tall, stoloniferous, epiphytic. Stems creeping, ascending, or erect, 4-sided, winged, lenticellate, later subterete, densely lenticellate, and scabrous, many-branched. Petiole ca. 5 mm, slightly winged; leaf blade obovate to elliptic, (6.5-)11-16(-23) × (2.2-)4.5-8(-11) cm, stiffly papery to subleathery, abaxially furfuraceous and tuberculate, adaxially minutely scrobiculate and glabrous, secondary veins 1 on each side of midvein, base cuneate and slightly decurrent, margin entire, apex acuminate. Inflorescences inserted on leafless stems or stolons, cymose, 3-7-flowered; peduncle ca. 1 cm, glabrous. Pedicel 3-7 mm. Hypanthium funnel-shaped, 6-7 mm, obtusely 4-sided, furfuraceous and small tuberculate. Calyx lobes inconspicuous, undulate, apex apiculate. Petals pink, suborbicular, 8-9 × ca. 8 mm, apex rounded. Stamens equal; filaments as long as anthers; anthers ca. 4 mm, base linear bulged ca. 1/2 length of anther; connective inflated, base decurrent forming a short spur. Ovary obovate, glabrous. Berry urceolate, ca. 1.8 × 1.2 cm. Seeds obovate, glabrous. Fl. Aug-Oct, fr. May-Jun.

Dense forests, near lake or river margins; 800-1400 m. Yunnan [Vietnam].

沙巴酸脚杆生长环境

生境:附生于树上,河谷林中树上,密林中,山谷,山谷河边密林中,山坡,山坡常绿阔叶林中。

海拔下限:1000米,海拔上限:1600米。

沙巴酸脚杆分布范围

云南贡山及滇东南。

参考来源

  1. 沙巴酸脚杆, 植物智, 2020-01-18