Smartweed (3)

Polygonum amphibium

Water Smartweed
Persicaria amphibia (Polygonum amphibium)

Family:Buckwheat (Polygonaceae)
AKA: Water Buckwheat, Water Knotweed
Photo taken on: July 6, 2006
Location: Grant Lake, Skyland, GV, CO
Life Zones: Plains to montane
Habitat: Pond and lake edges

Long stems root in mud or in water and float leaves and erect, dense, narrowly egg-shaped, pink flower clusters on the water surface.

Flora of North America reference.

Persicaria maculosa

Spotted Lady's-thumb
Persicaria maculosa

Family:Buckwheat (Polygonaceae)
AKA: Lady's-thumb Smartweed, Redshank
Photo taken on: September 25, 2013
Location: Abiquiu Lake, NM
Life Zones: Plains and foothills
Habitat: Moist waste areas

Grows sprawling or erect from a few inches to 3ft. Leaves are lance-shaped and often have a dark blotch. Flowers grow in a tight spikes at the end of branches.

Flora of North America reference.

Persicaria lapathifolia

Curlytop Knotweed
Persicaria lapathifolia

Family:Buckwheat (Polygonaceae)
AKA: Pale Smartweed, Pale Persicaria, Willow Weed,
 Dock-leaved Smartweed, Curlytop Smartweed,
 Nodding Smartweed, Curltop Lady's Thumb

Photo taken on: July 1, 2014
Location: Rio Chama, Abiquiu, NM
Life Zones: Plains and foothills
Habitat: Moist waste areas

Grows to 30" with thick, erect, reddish stems and narrowly lance-shaped leaves, sometimes with a dark blotch in the center. The flowers grow in a dense drooping spike.

Flora of North America reference.

Pink Long Clusters