异叶楼梯草Elatostema monandrum (D. Don) Hara
异叶楼梯草Elatostema monandrum (D. Don) Hara
28.异叶楼梯草 图版47: 4-5
Elatostema monandrum (D. Don) Hara in Ohashi, Fl. East. Himal. 3rd. Rep. 21. 1975; W. T. Wang in Bull. Bot. Lab. N.-E. For. Inst. 7: 37. 1980; 西藏植物志1: 551. 1983; 云南种子植物名录, 上册, 723. 1984; 贵州植物志4: 49. 1989. ——Procris monandra D. Don, Prodr. Fl. Nepal. 61. 1825. ——P. diversifolia Wall. Cat. n. 4631. 1831, nom. nud.——P. elegans Wall. Cat. n. 4632. 1831, nom nud. ——Elatostema surculosum Wight, Ic. Pl. Ind. Or. 6: t. 2091, f. 4. 1853. ——E. diversi foli-s um Wedd. in DC. Prodr. 16 (1): 189. 1869. ——E. surculosum var. elegan Hook. f. Fl. Brit. Ind. 5: 573. 1888; Hand.-Mazz. Symb. Sin. 7: 149. 1929. ——Pellionia mairei Levl. in Mde. d. Plts. 18: 28. 1916.
《Flora of China》 Vol. 5 (2003)
Elatostema monandrum (D. Don) H. Hara
异叶楼梯草 yi ye lou ti cao
Procris monandra D. Don, Prodr. Fl. Nepal. 61. 1825; Elatostema diversifolium Weddell; E. monandrum f. ciliatum (J. D. Hooker) Hara; E. monandrum f. pinnatifidum (J. D. Hooker) Hara; E. monandrum var. ciliatum (J. D. Hooker) Murti; E. monandrum var. pinnatifidum (J. D. Hooker) Murti; E. muscicola W. T. Wang; E. surculosum Wight; E. surculosum var. ciliatum J. D. Hooker; E. surculosum var. elegans J. D. Hooker; E. surculosum var. pinnatifidum J. D. Hooker; Pellionia mairei H. Léveillé.
Herbs dioecious, 5-20 cm tall. Stems ascending or erect, usually simple, pilose, furfuraceous. Leaves usually opposite, glabrous or glabrescent; nanophylls elliptic to lanceolate, 2-6 mm; stipules obscure; petiole 1-2 mm; leaf blade obliquely cuneate, obliquely elliptic, or lanceolate, 0.8-4(-6.5) × 0.4-1.2(-2) cm, herbaceous or membranous, major basal lateral veins both arising at base of leaf blade, cystoliths conspicuous, sparse or present only along margins; base obliquely cuneate, margin dentate or pinnatifid, apex acutate to acuminate. Male inflorescences solitary, simple, 1.5-2 mm in diam.; peduncle 0-1 mm; receptacle obscure; bracts connate, 2-2.5 mm; bracteoles lanceolate to linear. Female inflorescences solitary, 2-5 mm in diam., sessile; receptacle small; bracts broadly ovate; bracteoles spatulate-linear. Male flowers 4-merous. Achenes ellipsoid, 6-ribbed. Fl. Jun-Oct.
Mountain or valley forests, streamsides, dark damp rocks, valley precipices, on tree trunks; 800-3000 m. W Guizhou, SW Shaanxi, SW Sichuan, Xizang, Yunnan [Bhutan, India, N Myanmar, Nepal, Sikkim, Sri Lanka, Thailand].
别名：异叶假楼梯草;石螃蟹;吊血丹;岩下青;
科名：荨麻科 Urticaceae
属名：楼梯草属 Elatostema
28.异叶楼梯草 图版47: 4-5
Elatostema monandrum (D. Don) Hara in Ohashi, Fl. East. Himal. 3rd. Rep. 21. 1975; W. T. Wang in Bull. Bot. Lab. N.-E. For. Inst. 7: 37. 1980; 西藏植物志1: 551. 1983; 云南种子植物名录, 上册, 723. 1984; 贵州植物志4: 49. 1989. ——Procris monandra D. Don, Prodr. Fl. Nepal. 61. 1825. ——P. diversifolia Wall. Cat. n. 4631. 1831, nom. nud.——P. elegans Wall. Cat. n. 4632. 1831, nom nud. ——Elatostema surculosum Wight, Ic. Pl. Ind. Or. 6: t. 2091, f. 4. 1853. ——E. diversi foli-s um Wedd. in DC. Prodr. 16 (1): 189. 1869. ——E. surculosum var. elegan Hook. f. Fl. Brit. Ind. 5: 573. 1888; Hand.-Mazz. Symb. Sin. 7: 149. 1929. ——Pellionia mairei Levl. in Mde. d. Plts. 18: 28. 1916.
《Flora of China》 Vol. 5 (2003)
Elatostema monandrum (D. Don) H. Hara
异叶楼梯草 yi ye lou ti cao
Procris monandra D. Don, Prodr. Fl. Nepal. 61. 1825; Elatostema diversifolium Weddell; E. monandrum f. ciliatum (J. D. Hooker) Hara; E. monandrum f. pinnatifidum (J. D. Hooker) Hara; E. monandrum var. ciliatum (J. D. Hooker) Murti; E. monandrum var. pinnatifidum (J. D. Hooker) Murti; E. muscicola W. T. Wang; E. surculosum Wight; E. surculosum var. ciliatum J. D. Hooker; E. surculosum var. elegans J. D. Hooker; E. surculosum var. pinnatifidum J. D. Hooker; Pellionia mairei H. Léveillé.
Herbs dioecious, 5-20 cm tall. Stems ascending or erect, usually simple, pilose, furfuraceous. Leaves usually opposite, glabrous or glabrescent; nanophylls elliptic to lanceolate, 2-6 mm; stipules obscure; petiole 1-2 mm; leaf blade obliquely cuneate, obliquely elliptic, or lanceolate, 0.8-4(-6.5) × 0.4-1.2(-2) cm, herbaceous or membranous, major basal lateral veins both arising at base of leaf blade, cystoliths conspicuous, sparse or present only along margins; base obliquely cuneate, margin dentate or pinnatifid, apex acutate to acuminate. Male inflorescences solitary, simple, 1.5-2 mm in diam.; peduncle 0-1 mm; receptacle obscure; bracts connate, 2-2.5 mm; bracteoles lanceolate to linear. Female inflorescences solitary, 2-5 mm in diam., sessile; receptacle small; bracts broadly ovate; bracteoles spatulate-linear. Male flowers 4-merous. Achenes ellipsoid, 6-ribbed. Fl. Jun-Oct.
Mountain or valley forests, streamsides, dark damp rocks, valley precipices, on tree trunks; 800-3000 m. W Guizhou, SW Shaanxi, SW Sichuan, Xizang, Yunnan [Bhutan, India, N Myanmar, Nepal, Sikkim, Sri Lanka, Thailand].