Polygonaceae
Polygonum phytolaccifolium

Alpine Knotweed

Stems erect, stout. Leaves hairless, 4–10 in. long with wide bases or heart-shaped tapering to a sharp tip. Flowers in loose, nearly leafless, branched inflorescence, white to greenish white. Grows in seasonally moist meadows, near subalpine or alpine springs, rocky places, at high elevations.

  • Rarity: Locally Common
  • Flowering Time: All Summer
  • Life Cycle: Perennial
  • Height: 20--40 inches
  • Habitat: Subalpine, Meadow
  • Found In: Wallowas, N Cascades NP
  • Native: Yes