All Floras      Advanced Search
FOC Vol. 5 Page 286 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 5 | Polygonaceae | Polygonum

12. Polygonum argyrocoleon Steudel ex Kuntze, Linnaea. 20: 17. 1847.

帚萹蓄 zhou bian xu

Herbs annual. Stems erect, 50-80 cm tall, glabrous, angulate, much branched; branches ascending, fastigiate, nodes inflated, internodes 3-5 cm. Leaves caducous; petiole short, articulate at base; leaf blade usually caducous, lanceolate or linear-lanceolate, 1.5-4 cm × 6-8 mm, both surfaces with conspicuous veins, base narrowly cuneate, apex acute; ocrea lower part brown, upper part white, tubular, membranous, 6-8-veined, lacerate at apex. Inflorescence terminal, spicate, interrupted. Pedicel slender, articulate at apex. Perianth green, margin pinkish or white, 5-parted; tepals elliptic, ca. 2 mm. Stamens 7 or 8; filaments dilated at base. Styles 3; stigmas capitate. Achenes included in persistent perianth, brown, shiny, ovoid, trigonous, 2-2.5 mm, smooth. Fl. Jun-Jul, fr. Jul-Aug.

Marshy areas, streamsides; 200-2500 m. Gansu, Nei Mongol, Qinghai, Xinjiang [Afghanistan, Kazakhstan, Kyrgyzstan, Mongolia, Russia, Tajikistan, Turkmenistan, Uzbekistan; SW Asia].


Related Objects  
  • Illustration
  • Illustration

    Flora of North America  
  • Distribution Map
  • Map

    Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |