107. Polygonum dissitiflorum Hemsley, J. Linn. Soc., Bot. 26: 338. 1891.
稀花蓼 xi hua liao
Persicaria dissitiflora (Hemsley) H. Gross ex T. Mori; P. fauriei (H. Léveillé & Vaniot) Nakai ex T. Mori; Polygonum fauriei H. Léveillé & Vaniot; P. glanduliferum Nakai; Truellum dissitiflorum (Hemsley) Tzvelev.
Herbs annual. Stems erect or prostrate at base, 70-100 cm tall, branched, sparsely retrorsely prickly, usually with few stellate hairs. Petiole 2-5 cm, stellate hairy, often retrorsely prickly; leaf blade light green abaxially, green adaxially, ovate-elliptic, 4-15 × 3-7 cm, abaxially sparsely stellate hairy and retrorsely prickly along midvein, adaxially sparsely stellate hairy and bristly, base cordate or hastate, margin shortly ciliate, apex acuminate; ocrea tubular, 0.6-1.5 cm, membranous, shortly ciliate, oblique. Inflorescence terminal or axillary, paniculate; peduncles slender, reddish purple glandular hairy; bracts green, funnel-shaped, 2.5-3 mm, margin strongly ciliate, each 1- or 2-flowered. Pedicel 2-3 mm. Perianth pink, 5-parted; tepals elliptic, ca. 3 mm. Stamens 7 or 8, in 2 whorls, included. Styles 3, connate to below middle. Achenes included in persistent perianth, dark brown, somewhat dull, globose, weakly trigonous at apex, ca. 3 mm. Fl. Jun-Aug, fr. Jul-Sep.
Valleys, hilly grasslands, stream banks; 100-1500 m. Anhui, Fujian, Gansu, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, Zhejiang [Korea, Russia (Far East)].