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台湾酸脚杆Medinilla formosana

时间:2013-10-16 19:56来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 台湾酸脚杆 学名( Scientific Name ): Medinilla formosana Hayata 英文名( English Common Name ): 别名( Chinese Common Name ): 台湾野牡丹藤 异名( Synonym ): 科属( Family Genus ): 野牡丹科Melastomatacea
中文名(Chinese Name):台湾酸脚杆
学名(Scientific Name):Medinilla formosana Hayata
英文名(English Common Name):
别名(Chinese Common Name):台湾野牡丹藤
异名(Synonym):
科属(Family & Genus):野牡丹科Melastomataceae酸脚杆属Medinilla
形态特征(Description):攀援灌木,小枝钝四棱形,具星散的皮孔,无毛,节上具1环短粗刺毛。叶对生或轮生,叶片纸质,长圆状倒卵形或倒卵状披针形,顶端骤然尾状渐尖,具钝头,基部楔形,长10-20厘米,宽3-6厘米,全缘,离基3出脉,于叶片中部尚有1对侧脉,两面无毛,叶面中脉微凹,背面基出脉隆起,侧脉微隆起;叶柄长5-8毫米,无毛。由聚伞花序组成圆锥花序,顶生或近顶生,长约25厘米,无毛,最末一次的总花梗长2-3厘米;苞片线形,长约3毫米;花梗长约6毫米,无毛;花萼近球形,四棱形,上部微缢缩,长3毫米,直径2.5毫米,无毛,檐部全缘或具不明显的4齿;花瓣4,倒卵形,上部偏斜,顶端钝,长约7毫米;雄蕊8,同形,等长,花丝长约4毫米,花药狭披针形,长3-4毫米,基部具小瘤,药隔微膨大,下延成短距;子房下位,与萼管贴生,顶端呈短圆锥形。浆果近球形,为宿存萼所包,直径 约7毫米,无毛,顶端冠以宿存萼片。
分布(Distribution):产我国台湾南端及岛屿,见于海拔50-1000米的山间林中。模式标本采自台湾恒春。
用途(Use):FOC Vol. 13 Page 393, 394
Medinilla formosana Hayata, Icon. Pl. Formosan. 2: 110. 1912.
台湾酸角杆 tai wan suan jiao gan | Melastomataceae  | Medinilla
Shrubs, scandent. Branches obtusely 4-sided, scattered lenticellate, glabrous but with a ringed long setose trichomes on nodes. Leaves opposite or verticillate; petiole 5-10 mm, glabrous; leaf blade oblong-obovate to obovate-lanceolate, 10-20 × 7-14 cm, papery, both surfaces glabrous, secondary veins 1 on each side of midvein, base broadly cuneate, margin entire, apex abruptly acuminate with an obtuse tip. Inflorescences terminal or nearly terminal, cymose paniculate, ca. 25 cm, glabrous; bracts linear, ca. 3 mm. Pedicel ca. 6 mm, glabrous. Hypanthium nearly globular, ca. 3 × 2.5 mm, 4-sided, glabrous, apex entire or inconspicuously 4-dentate. Petals 4, obovate, ca. 7 mm, oblique. Stamens 8, equal; filaments ca. 4 mm; anthers narrowly lanceolate, 3-4 mm, base tuberculate; connective decurrent, forming a short spur. Ovary inferior. Berry nearly globular, ca. 7 mm in diam., glabrous. Fl. Dec-Jan.
● Forests, mountain slopes; below 100-1000 m. Taiwan (Hengchun Peninsula).




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