Smartweed (Persicaria pensylvanicum, Polygonum pensylvanicum) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, April 5, 2009
Smartweed (Polygonum) near a pond in Central Park. College Station, Texas, July 30, 2014
Curlytop smartweed (polygonum lapathifolium) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2008
Smartweed like flower in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, March 14, 2009
Smartweed (Polygonum) at a cattle drinking pond near a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, August 29, 2009
Willow leaf (curlytop) smartweed (polygonum lapathifolium) on north shore of Lake Somerville. Texas, September 27, 2008
Standing yellow-crowned night-heron bird in smartweed in Brazos Bend State Park. Needville, Texas, June 2, 2012
Moth on smartweed like flower in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, April 5, 2009
Dry smartweed in a lake near McCain Creek Park at Lake Somerville. Texas, November 12, 2011
Hunting yellow-crowned night-heron bird in smartweed in Brazos Bend State Park. Needville, Texas, June 2, 2012
Smartweed overgrowing dry pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 23, 2011
Dry smartweed in a pond near McCain Creek Park at Lake Somerville. Texas, November 12, 2011
Smartweed leaf-flower (Phyllanthus polygonoides) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, August 8, 2014
Smartweed leaf-flower (Phyllanthus polygonoides) in Old Baylor Park. Independence, Texas, May 16, 2020
Smartweed (Persicaria, Polygonum) in a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2020
Flowers of smartweed (Persicaria, Polygonum) in a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2020
Blooming smartweed (Persicaria, Polygonum) in a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2020
Smartweed leaf-flower (Phyllanthus polygonoides) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 17, 2022
Flowers of smartweed (Persicaria, Polygonum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024
Smartweed (Persicaria, Polygonum) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
Flowers of smartweed (Persicaria, Polygonum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
