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镜面草Pilea peperomioides

时间:2013-11-10 10:06来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 镜面草 学名( Scientific Name ): Pilea peperomioides Diels 英文名( English Common Name ): 别名( Chinese Common Name ): 翠屏草 异名( Synonym ): Podophyllum cavaleriei H. Lv. 科属( Family Genus ): 荨
中文名(Chinese Name):镜面草
学名(Scientific Name):Pilea peperomioides Diels
英文名(English Common Name):
别名(Chinese Common Name):翠屏草
异名(Synonym):Podophyllum cavaleriei H. Lév.
科属(Family & Genus):荨麻科(Urticaceae)冷水花属
形态特征(Description):多年生肉质草本,无毛,丛生,具根状茎。茎直立,粗状,不分枝,高2-13厘米,粗5-10毫米,节很密集,带绿色,干时变棕褐色,叶聚生茎顶端,茎上部密生鳞片状的托叶,叶痕大,半圆形。叶片肉质,干时变纸质,近圆形或圆卵形,长2.5-9厘米,宽2-8厘米,盾状着生于叶柄,先端钝形或圆形,基部圆形或微缺,边缘全缘或浅波状,上面绿色,下面灰绿色,干时呈细蜂案状,钟乳体细杆状,长0.1-0.2毫米,在上面较明显,基出脉3条,弧曲,在近顶端彼此网结,外向侧脉数对在近边缘处彼此结成网,其中最下面2-3对几乎从叶柄顶端伸出,连同基出脉构成放射状的脉纹,侧脉不明显;叶柄长2-17厘米;托叶鳞片状,淡绿色,干时变棕褐色,三角状卵形,长约7毫米,先端短尾状渐尖,密布条形钟乳体。雌雄异株;花序单个生于顶端叶腋,聚伞圆锥状,长10-28厘米,花序梗粗壮,长5-14厘米,花疏松地排列于曲折生长的花枝上;苞片小,披针形,长约0.5毫米。雄花具梗,带紫红色,在芽时倒卵形,长约2.5毫米;花被片4,倒卵形,外面近先端有短角;雄蕊4;退化雌蕊很小,长圆形。雌花近无梗;花被片3,不等大,中间一枚近船形,果时长不及果的一半,侧生的二枚狭三角形,比中间一枚短近2倍。瘦果卵形,稍扁,歪斜,长约0.8毫米,表面有紫红色细疣状突起。花期4-7月,果期7-9月。
分布(Distribution):产云南与四川西南,生于海拔1500-3000米山谷林下阴湿处。
引自中国植物志英文版:FOC Vol. 5 Page 112   
Pilea peperomioides Diels, Notes Roy. Bot. Gard. Edinburgh. 5: 592. 1912.
镜面草 jing mian cao| Urticaceae  | Pilea
Herbs perennial, rhizomatous, glabrous, often dioecious, sometimes monoecious. Stems greenish to dark brownish, often simple, erect, ascending, or climbing, 15-40 cm tall, 0.6-2 cm in diam., thick, woody at base, succulent distally, internodes 0.3-1 cm, rough; leaf scars conspicuous, semiorbicular, 3-4 mm in diam., Leaves spirally opposite, crowded on upper nodes; stipules persistent, light green, becoming brownish when dry, triangular-ovate, caudate-acuminate, squamose, 7-12 mm, with dense linear cystoliths; petiole unequal in length, 2-17 cm; leaf blade abaxially pale green, adaxially green, suborbicular, peltate, unequal in size, 2.5-9 × 2-8 cm, succulent, papery when dry, 3-veined, lateral veins 3 or 4 on each side, inconspicuous, external secondary veins numerous, anastomosing by margin, finely honeycombed abaxially, cystoliths fusiform, often conspicuous adaxially, base rounded or emarginate, margin entire, rarely inconspicuously undulate, apex rounded or obtuse. Inflorescences solitary, in upper nodes, male inflorescence a cymose panicle, 18-28 cm overall, peduncle thick, 5-14 cm; bracts lanceolate, ca. 0.5 mm; female inflorescence shorter. Male flower purplish, pedicellate, in bud obovoid, ca. 2.5 mm; perianth lobes 4, obovate, connate at base, subapically corniculate; stamens 4; rudmentary ovary oblong. Female perianth lobes unequal, largest lobe cymbiform, 1/2 as long as achene. Achene purplish, broadly ovoid, ca. 0.8 mm, slightly compressed, oblique, verrucose, enclosed by persistent perianth. Fl. Apr-Jul, fr. Jul-Sep.
* Shaded moist rocks in forests; 1500-3000 m. SW Sichuan, W Yunnan.
This species is very rare and possibly endangered in the wild, but is widely cultivated as an ornamental pot plant in China and other countries.
 


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