沙巴酸腳杆檢視原始碼討論檢視歷史
沙巴酸腳杆 |
中文學名:沙巴酸腳杆 拉丁學名:Medinilla petelotii Merr. 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:桃金娘目 科:野牡丹科 屬:酸腳杆屬 |
沙巴酸腳杆,為桃金娘目、野牡丹科、酸腳杆屬植物。產雲南貢山及滇東南,海拔1000—1400米的山谷、山坡、河邊密林中樹上附生。有時於林下。越南亦有。 [1]
沙巴酸腳杆形態特徵
描述字段:灌木,高40—150厘米,分枝多,具匍匐莖,逐節生根,常附生於樹上;莖直立或彎曲上升,四棱形,幼時棱上具明顯的狹翅,具皮孔,以後近圓柱形,具密皮孔而粗糙。
葉片堅紙質或略厚,倒卵形或橢圓形,頂端漸尖,基部楔形,微下延,長(6.5-)11—16厘米,寬(2.2-)4.5—8厘米,全緣,離基5出脈,其最外的2脈近葉基部,葉面密布小窩點,無毛,脈微隆起,背面被秕糠狀小突起,脈隆起;葉柄短,長約5毫米,略具翅。
聚傘花序,生於無葉老莖上或匍匐莖上,有花3-7朵,總梗長約1.2厘米,無毛;苞片及小苞片成對,廣卵形,被疏秕糠;花梗長3—7毫米;花萼漏斗形,鈍四棱形,長6—7毫米,被批糠及小突起,裂片淺波狀,頂端具小刺尖頭;花瓣粉紅色,近圓形,頂端圓形,長8—9毫米;雄蕊等長,花絲與花葯等長,長約4毫米,花葯基部具線形突起,長達花葯的1/2,藥隔膨大,下延呈短距;子房卵形,無冠。
漿果壇形,長1.8厘米,寬1.2厘米,果梗長2—2.5厘米;種子倒卵形,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; 雲南植物志2: 132. 1979; C. Chen植物分類學報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].
沙巴酸腳杆生長環境
生境:附生於樹上,河谷林中樹上,密林中,山谷,山谷河邊密林中,山坡,山坡常綠闊葉林中。
海拔下限:1000米,海拔上限:1600米。