| Family | POLYGONACEAE |
| Genus species | Polygonum cognatum Meisn. |
| Bibliography | Monogr. Polyg.: 91 (1826) |
| Native Range | e. Medit. to Mongolia and Nepal |
| Primary Biome | Temperate |
| Habitat | rocky slopes |
| Altitude | 1400-4600m |
| Description | leaves petiolate, elliptic, 1-2cm long, on both faces glabrous, ochreas silvery, hyaline, veined, flowers 1-5 in axillary cymes, bracts membranous, acuminate, 1-2cm long |
| Size | 10-15cm |
| Color | pink, white |
| Bloom | summer |
| Ca | |
| Type | perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, germ. 1-3 months, 13-18°C division in spring; cuttings in late spring and late summer |
| Synonyms | Polygonum affine Stephan ex Spreng. Polygonum alpestre C.A.Mey. Polygonum alpestre var. ammannioides (Jaub. & Spach) Boiss. Polygonum ammannioides Jaub. & Spach Polygonum cognatum var. alpestre (C.A.Mey.) Meisn. Polygonum cognatum var. ammannioides (Jaub. & Spach) Meisn. Polygonum confertum Royle ex Bab. Polygonum libanoticum Ehrenb. ex Meisn. Polygonum maritimum Eichw. Polygonum monticola Steud. Polygonum myriophyllum H.Gross Polygonum pluriflorum K.Koch |
| Territory | 3 Asia-Temperate 30 Siberia (ALT Altay) 32 Middle Asia (TKM Turkmenistan) 33 Caucasus (NCS North Caucasus, TCS Transcaucasus) 34 Western Asia (IRN Iran, IRQ Iraq, LBS Lebanon-Syria, PAL Palestine, TUR Turkey) 36 China (CHI Inner Mongolia, CHX Xinjiang) 37 Mongolia 4 Asia-Tropical 40 Indian Subcontinent (NEP Nepal, PAK Pakistan, WHM West Himalaya) |