Polygonum utahense, the Utah knotweed, is an unresolved name for a putative North American species of plants in the buckwheat family.[2] It has been found only in the States of Utah and Arizona in the southwestern United States.[3]

Polygonum utahense is a herb up to 50 cm (20 in) tall. Stems are green or brown, not wiry. Leaves are narrow, up to 4 cm (1.6 in) long. Flowers are pink or white.[4]

References

  1. ^ Tropicos, Polygonum utahensis Brenckle & Cottam
  2. ^ "The Plant List: Polygonum". Royal Botanic Gardens, Kew and Missouri Botanic Garden. 2013.
  3. ^ Biota of North America Program 2014 county distribution map
  4. ^ Flora of North America, Polygonum utahense Brenckle & Cottam, 1940. Utah knotweed