 Tiny yellow flower of Narrow-leaved evening primrose (thread-leaf sundrops, Oenothera linifolia) in Lick Creek Park. College Station, Texas, April 11, 2010
 Tiny yellow flower of Narrow-leaved evening primrose (thread-leaf sundrops, Oenothera linifolia) in Lick Creek Park. College Station, Texas, April 24, 2009
 Yellow flowers of Narrow-leaved evening primrose (thread-leaf sundrops, Oenothera linifolia) in Lick Creek Park. College Station, Texas, May 20, 2014
 Narrow-leaved evening primrose (thread-leaf sundrops, Oenothera linifolia) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 16, 2010
 Cut-leaved evening primrose flower (Oenothera laciniata) in Lick Creek Park. College Station, Texas, April 20, 2008
 Cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Underside of leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Basal leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Close-up of leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Cut-leaved evening primrose (Oenothera laciniata) in dew in Lick Creek Park. College Station, Texas, April 16, 2009
 Cut-leaved evening primrose (Oenothera laciniata) in dew in Lick Creek Park. College Station, Texas, April 5, 2018
 Yellow flower of evening primrose (Oenothera hookeri) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, July 7, 2022
 Aecial peridium of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Various types of spores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Teleutospores and aeciospores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Spores of different sizes of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Details of aeciospores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Whitish peridial cells of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Details of aecial peridium of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) flower in Lick Creek Park. College Station, Texas, June 8, 2008
 Showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 12, 2022
 Showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 5, 2022
 Flower of showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
 Whitish peridial cells and aeciospores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Small yellow flower of evening primrose or Ludwigia(?) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 16, 2010
 Some tubular structure of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose collected in Lick Creek Park. College Station, Texas, April 18, 2022
 Showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, April 18, 2018
 Flower of showy evening primrose (Oenothera speciosa) with holes eaten out by bugs in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
 Cut-leaved evening primrose flower (Oenothera laciniata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 5, 2008
 Aecial peridium showing the whitish peridial cells and aeciospores of rust fungus Puccinia dioicae under microscope at low magnification, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Yellow flower of evening primrose (Oenothera) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Evening primrose (Oenothera) in dew in Lick Creek Park. College Station, Texas, August 3, 2014
 Yellow flower of Hooker s evening primrose (Oenothera hookeri) at sunrise in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 29, 2008
 Narrow-leaf water-primrose (Ludwigia octovalvis) with dew in Lick Creek Park. College Station, June 15, 2008
 A nest of leaf-cutting ants with green and black fruits of evening primrose (Oenothera)(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 20, 2022
 Narrow-leaf water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, August 4, 2021
 Unripe green and black fruits of evening primrose (Oenothera)(?) collected by leaf-cutting ants at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 20, 2022
 Showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 9, 2021
 Showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 20, 2021
 Blooming narrow-leaf water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, August 4, 2021
 Showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, March 23, 2023
 Showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, June 9, 2019
 Cut-leaved evening primrose flower (Oenothera laciniata) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Flowers of showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 20, 2021
 Showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
 Evening primrose flower in Lick Creek Park. College Station, Texas, April 2, 2008
 Large yellow flower of Hooker s evening primrose (Oenothera hookeri) and thick cylindrical ovaries behind it in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 21, 2008
 Large yellow flower on a stout erect stem of Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 26, 2008
 Evening primrose (Oenothera) on Butterfly Alley (a recent cutting) in Lick Creek Park. College Station, Texas, May 28, 2018
 White phenotype of showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 18, 2023
 Showy evening primrose (Oenothera speciosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 15, 2022
 White phenotype of showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, June 22, 2012
 Pink flowers of showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
 Flower of Showy evening primrose (Oenothera speciosa) on Park Hudson Trail. College Station, Texas, August 12, 2014
 Close-up of showy evening primrose (Oenothera speciosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 15, 2022
 Basal rosette of leaves of evening primrose (Oenothera)(?) on a recent cutting in Lick Creek Park. College Station, Texas, March 15, 2020
 Cut-leaved evening primrose (Oenothera laciniata) in sew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Cut-leaved evening primrose (Oenothera laciniata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Flower of showy evening primrose (Oenothera speciosa) under power lines near Park Hudson Trail. College Station, Texas, August 6, 2014
 Yellow flowers of evening primrose (Oenothera hookeri) in the Gardens at Texas A and M University. College Station, Texas, August 10, 2021
 Showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, March 27, 2020
 Cut-leaved evening primrose (Oenothera laciniata) in dew at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Yellow flowers of Evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 3, 2009
 Showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, March 24, 2019
 Tiny blue flower of Lance-leaved water-willow (Justicia ovata var. lanceolata) in Lick Creek Park. College Station, Texas, September 16, 2012
 Close-up of yellow flowers of Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 5, 2008
 Large yellow flowers of Hooker s evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 26, 2008
 Evening primrose (Oenothera) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, May 6, 2022
 Flower of showy evening primrose (Oenothera speciosa) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, March 27, 2021
 Tiny blue flower of lance-leaved water-willow (Justicia ovata var. lanceolata) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, May 27, 2010
 Showy evening primrose (Oenothera speciosa) and a rusty vintage car on Lynn Street. Richards, Texas, April 16, 2022
 Tiny yellow flower like evening primrose in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 14, 2009
 Showy evening primrose (Oenothera speciosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 23, 2021
 Showy Evening Primrose (Oenothera speciosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 6, 2018
 Cut-leaved evening primrose (Oenothera laciniata) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Narrow-leaved pinweed (Lechea tenuifolia) in Lick Creek Park. College Station, Texas, May 17, 2018
 Showy Evening Primrose (Oenothera speciosa) on a lawn in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 6, 2018
 Flowers of showy evening primrose (Oenothera speciosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 23, 2021
 Flowers of showy evening primrose (Oenothera speciosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 6, 2018
 Blooming showy evening primrose (Oenothera speciosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 23, 2021
 Yellow coreopsis flower in Lick Creek Park. College Station, Texas, April 29, 2022
 Showy evening primrose (Oenothera speciosa) in Central Park. College Station, Texas, August 4, 2014
 Narrow-leaved pinweed (Lechea tenuifolia) with seeds in Lick Creek Park. College Station, Texas, May 17, 2018
 Red fruits of narrow-leaved pinweed (Lechea tenuifolia) in Lick Creek Park. College Station, Texas, May 17, 2018
 Showy evening primrose (Oenothera speciosa) with water drops in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 23, 2021
 Showy evening primrose (Oenothera speciosa) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, April 30, 2011
 Showy evening primrose (Oenothera speciosa) near Park Hudson Trail. College Station, Texas, July 24, 2014
 Showy evening primrose (Oenothera speciosa) on Park Hudson Trail. College Station, Texas, August 12, 2014
 Flowers of showy evening primrose (Oenothera speciosa) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 9, 2018
 Showy evening primrose (Oenothera speciosa) and weeds in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 21, 2020
 Showy evening primrose (Oenothera speciosa) on a lawn in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 12, 2010
 Showy evening primrose (Oenothera speciosa) on a lawn in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 13, 2019
 Back lit showy evening primrose (Oenothera speciosa) near Park Hudson Trail. College Station, Texas, July 24, 2014
 Flowers of showy evening primrose (Oenothera speciosa) on a lawn in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 13, 2019
 Showy evening primrose (Oenothera speciosa) on a parking place in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 21, 2020
 Yellow flower of bull thistle (Cirsium horridulum) in Lick Creek Park. College Station, Texas, April 18, 2022
 Brown leaf of mustang grape and yellow leaf of muscadine grape on the ground after recent rains in Lick Creek Park. College Station, Texas, August 19, 2022
 Showy evening primrose (Oenothera speciosa) blooming near wooden fence in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 9, 2018
 Showy evening primrose (Oenothera speciosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
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