镰叶冷水花Pilea semisessilis Hand.-Mazz.

别名：半无柄冷水花;

科名：荨麻科 Urticaceae

属名：冷水花属 Pilea

《中国植物志》第23(2)卷105页
  39.镰叶冷水花（中国高等植物图鉴补编）图版21: 1-4
  Pilea semisessilis Hand. -Mazz. Symb. Sin. 7: 137. 1929; C J. Chen in Bull. Bot. Res. (Harbin) 2 (3): 75. 1982; 中国高等植物图鉴, 补编1: 180,图8448-1982;云南种子植物名录, 上册734-1984. －－P. symmeria auct. non Wedd. : C. H. Wright in Journ. Linn. Soc. Bot. 26: 479. 1899, p. p. quoad A. Henry 9790.
  多年生草本，根状茎匍匐。茎肉质，纤细，高25-60厘米，粗2-4毫米，无毛，干时常变蓝绿色，节间稍膨大，不分枝或有少数分枝。叶近膜质，在同对的不等大，叶片不对称，常为镰刀状披针形，有时为卵状披针形或卵形（尤其幼时），长（2.5-）5-14厘米，宽(1 -) 1.5-5厘米，下部的和幼株的叶更小，卵形，先端锐尖，成熟植株上部的叶先端长尾状渐尖，基部微缺或浅心形，稀圆形，边缘自基部至先端尾部有锐锯齿或浅锯齿，上面疏生透明硬毛，后脱落，干后常变蓝绿色，下面无毛或有时在脉上疏生短柔毛，钟乳体条形，在上面长约0.1-0.2毫米，在下面较明显，长约0.3-0.4毫米，基出脉3条，其侧出的一对伸达先端的齿尖，二级脉多数，近于横向平行展开，外向的沿锯齿外缘伸达齿尖；叶柄在同对的极不等长，长的长1-4厘米，短的长1厘米至无柄，无毛；托叶卵状三角形，稀长圆形，长2-5毫米，宿存。花雌雄同株或异株，聚伞状圆锥花序单生于叶腋；雄花序与叶近等长，花序梗长27厘米；雌花序分枝较少，长1.5-4厘米，花序梗长1-3厘米。雄花几无梗，在芽时长约1毫米；花被片4，长圆状椭圆形，先端锐尖；雄蕊4；退化雌蕊不明显。雌花长约0.8毫米；花被片3，不等大，果时中央的一枚船形，长及果的约1/2，侧生的二枚三角状卵形，较长的一枚短1/3-1/2。瘦果宽卵形，扁，顶端几乎不偏斜，长1毫米，光滑，初时淡绿色，熟时变土褐色。花期7-9月，果期9-10月。
  产江西西部、湖南西部、四川、广西北部、云南北部和西藏东南部。生于海拔1 000-2 800（-3 400)米山谷林下或山坡路边草丛中。模式标本采自湖南武冈。

《Flora of China》 Vol. 5 (2003)
Pilea semisessilis  Handel-Mazzetti
镰叶冷水花   lian ye leng shui hua
Herbs perennial, stoloniferous, glabrous, monoecious or dioecious. Stems blue green when dry, 20-60 cm tall, woody at base, succulent distally, swollen between nodes. Stipules persistent; triangular to oblong, 2-5 mm, membranous, petiole strongly unequal in length, 0-4 cm; leaf blade abaxially pale green, adaxially often blue-green, falcate-lanceolate rarely ovate-lanceolate, usually asymmetric, unequal in size, (2.5-)5-14 × (1-)1.5-5 cm, membranous, 3-veined, lateral veins many, transverse, abaxial surface sometimes puberulent along veins, adaxial surface sparsely pilose, cystoliths fusiform often conspicuous, base emarginate or subcordate, margin sharply serrate or shallowly serrate, acumen serrulate, apex long caudate-acuminate. Inflorescences solitary, male a paniculate cyme, 2-7 cm; pedunculate, female inflorescence 1.5-4 cm, peduncle 1-3 cm. Male flowers subsessile, in bud ca. 1 mm; perianth lobes 4, oblong-elliptic, apex acute; stamens 4; rudimentary ovary minute. Female flowers subsessile, in bud ca. 0.8 mm; perianth lobes connate at base, subequal, abaxial lobe larger, subapically corniculate; staminodes 3, scale-like, oblong. Achene brownish, broadly ovoid, ca. 1 mm, compressed, not oblique, smooth, enclosed by unequal perianth lobes. Fl. Jul-Sep, fr. Sep-Oct.
Shaded wet places of Pinus forests, roadsides; 1000-2800(-3400) m. N Guangxi, Hunan, W Jiangxi, Sichuan, SE Xizang, NW Yunnan [N Thailand].