小叶楼梯草Elatostema parvum (Bl.) Miq.
小叶楼梯草Elatostema parvum (Bl.) Miq.
24.小叶楼梯草（海南植物志）图版45: 8-10（见220页）
Elatostema parvum (Bl.) Miq. in Zoll. Syst. Verz. Ind. Archip. 102. 1854; H. Schrdter in Repert. Spec. Nov. Regni Veg. Beih. 83 (2): 156. 1936; 海南植物志2: 409. 1965; W. T. Wang in Bull. Bot. Lab. N.-E. For. Inst. 7: 35. 1980; 云南种子植物名录, 上册, 723. 1984; 贵州植物志4: 49. 1989. ——Procris parva Bl. Bijdr. 512. 1825. ——Elatostema stracheyanum Wedd. in Ann. Sci. Nat. ser. 4, 1: 188. 1854; in DC. Prodr. 16 (1): 189. 1869; Hook. f. Fl. Brit. Ind. 5: 567. 1888; Hand.-Mazz. Symb. Sin. 7: 146. 1929; H. Schreter in l. c. 154.——E. minutum Hayata in Journ. Coll. Sci. Univ. Tokyo 25 (9): 198. 1908; S. T. Liu et W. D. Huang in Li, Fl. Taiwan 2: 181. 1976. ——Pellionia esquirolii Levl. in Repert. Spec. Nov. Regni Veg. 11: 551. 1913.
《Flora of China》 Vol. 5 (2003)
Elatostema parvum (Blume) Miquel
小叶楼梯草 xiao ye lou ti cao
Herbs perennial, monoecious or dioecious, 5-45 cm tall. Stems ascending or erect, branched or simple, densely retrose-strigose. Leaves alternate; nanophylls oblong, 3-9 mm; stipules lanceolate or linear, 4-7 × 1-1.2 mm, glabrous, with cystoliths; petiole 0-1 mm; leaf blade obliquely obovate, obliquely oblanceolate, or oblong, 1.5-8 × 0.5-2.5 cm, herbaceous, major basal lateral veins both arising at base of leaf blade or 1 arising above base, abaxial surface strigillose along veins, adaxial surface sparsely strigillose or glabrescent, cystoliths conspicuous, dense; base with broader half rounded, margin serrate with 7-20 teeth, apex acuminate, acute, or shortly cuspidate. Male inflorescences solitary or in pairs, simple, 3-5 mm in diam., sessile; receptacle obscure; bracts connate, ca. 5 mm; bracteoles narrowly ovate, lanceolate, or linear. Female inflorescences solitary or in pairs, broadly elliptic, 4-6 mm wide, sessile; receptacle small; bracts narrowly lanceolate or subulate. Male flowers 5-merous. Achenes ovoid, ribbed. Fl. Feb-Aug.
Mountain forests and forest margins, rock crevices, streamsides; 500-2800 m. N Guangdong, NW Guangxi, SW Guizhou, S Sichuan, Taiwan, SE Xizang, S Yunnan [Bhutan, India, Indonesia, Myanmar, Nepal, Philippines, Sikkim].
别名：滇黔楼梯草;绒茎楼梯草;西南楼梯草;
科名：荨麻科 Urticaceae
属名：楼梯草属 Elatostema
24.小叶楼梯草（海南植物志）图版45: 8-10（见220页）
Elatostema parvum (Bl.) Miq. in Zoll. Syst. Verz. Ind. Archip. 102. 1854; H. Schrdter in Repert. Spec. Nov. Regni Veg. Beih. 83 (2): 156. 1936; 海南植物志2: 409. 1965; W. T. Wang in Bull. Bot. Lab. N.-E. For. Inst. 7: 35. 1980; 云南种子植物名录, 上册, 723. 1984; 贵州植物志4: 49. 1989. ——Procris parva Bl. Bijdr. 512. 1825. ——Elatostema stracheyanum Wedd. in Ann. Sci. Nat. ser. 4, 1: 188. 1854; in DC. Prodr. 16 (1): 189. 1869; Hook. f. Fl. Brit. Ind. 5: 567. 1888; Hand.-Mazz. Symb. Sin. 7: 146. 1929; H. Schreter in l. c. 154.——E. minutum Hayata in Journ. Coll. Sci. Univ. Tokyo 25 (9): 198. 1908; S. T. Liu et W. D. Huang in Li, Fl. Taiwan 2: 181. 1976. ——Pellionia esquirolii Levl. in Repert. Spec. Nov. Regni Veg. 11: 551. 1913.
《Flora of China》 Vol. 5 (2003)
Elatostema parvum (Blume) Miquel
小叶楼梯草 xiao ye lou ti cao
Herbs perennial, monoecious or dioecious, 5-45 cm tall. Stems ascending or erect, branched or simple, densely retrose-strigose. Leaves alternate; nanophylls oblong, 3-9 mm; stipules lanceolate or linear, 4-7 × 1-1.2 mm, glabrous, with cystoliths; petiole 0-1 mm; leaf blade obliquely obovate, obliquely oblanceolate, or oblong, 1.5-8 × 0.5-2.5 cm, herbaceous, major basal lateral veins both arising at base of leaf blade or 1 arising above base, abaxial surface strigillose along veins, adaxial surface sparsely strigillose or glabrescent, cystoliths conspicuous, dense; base with broader half rounded, margin serrate with 7-20 teeth, apex acuminate, acute, or shortly cuspidate. Male inflorescences solitary or in pairs, simple, 3-5 mm in diam., sessile; receptacle obscure; bracts connate, ca. 5 mm; bracteoles narrowly ovate, lanceolate, or linear. Female inflorescences solitary or in pairs, broadly elliptic, 4-6 mm wide, sessile; receptacle small; bracts narrowly lanceolate or subulate. Male flowers 5-merous. Achenes ovoid, ribbed. Fl. Feb-Aug.
Mountain forests and forest margins, rock crevices, streamsides; 500-2800 m. N Guangdong, NW Guangxi, SW Guizhou, S Sichuan, Taiwan, SE Xizang, S Yunnan [Bhutan, India, Indonesia, Myanmar, Nepal, Philippines, Sikkim].