 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 11, 2022
 Tiny yellow flower of Narrow-leaved evening primrose (thread-leaf sundrops, Oenothera linifolia) in Lick Creek Park. College Station, Texas, April 24, 2009
 Yellow flower of narrow-leaved evening primrose (thread-leaf sundrops, Oenothera linifolia) at the end of Creagor Lane near Lick Creek Greenway Trail. College Station, Texas, April 2, 2024
 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 (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
 Cut-leaved evening primrose flower (Oenothera laciniata) in Lick Creek Park. College Station, Texas, April 20, 2008
 Cut-leaved evening primrose (Oenothera laciniata) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 12, 2024
 Cut-leaved evening primrose (Oenothera laciniata) in dew on Post Oak Trail in Lick Creek Park. College Station, Texas, April 12, 2024
 Cut-leaved evening primrose (Oenothera laciniata) at sunrise on Post Oak Trail in Lick Creek Park. College Station, Texas, April 12, 2024
 Flower of cut-leaved evening primrose (Oenothera laciniata) in dew on Post Oak Trail in Lick Creek Park. College Station, Texas, April 12, 2024
 Flower of cut-leaved evening primrose (Oenothera laciniata) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 12, 2024
 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
 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
 Evening primrose (Oenothera) in dew in Lick Creek Park. College Station, Texas, August 3, 2014
 Yellow flowers of evening primrose (Oenothera hookeri) in the Gardens at Texas A and M University. College Station, Texas, August 10, 2021
 Flowers of showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 20, 2021
 Yellow flowers of Evening primrose (Oenothera hookeri) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, September 3, 2009
 Yellow flower of evening primrose (Oenothera) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 Narrow-leaf water-primrose (Ludwigia octovalvis) with dew in Lick Creek Park. College Station, June 15, 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
 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
 Narrow-leaf water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, August 4, 2021
 Pink flowers of showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
 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, April 18, 2018
 Showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, June 9, 2019
 Showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, March 23, 2023
 Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) flower in Lick Creek Park. College Station, Texas, June 8, 2008
 Evening primrose (Oenothera) on Butterfly Alley (a recent cutting) in Lick Creek Park. College Station, Texas, May 28, 2018
 Showy evening primrose (Oenothera speciosa) in Central Park. College Station, Texas, August 4, 2014
 White phenotype of showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, June 22, 2012
 Showy evening primrose (Oenothera speciosa) on Park Hudson Trail. College Station, Texas, August 12, 2014
 Showy evening primrose (Oenothera speciosa) near Park Hudson Trail. College Station, Texas, July 24, 2014
 Basal rosette of leaves of evening primrose (Oenothera)(?) on a recent cutting in Lick Creek Park. College Station, Texas, March 15, 2020
 Flower of Showy evening primrose (Oenothera speciosa) on Park Hudson Trail. College Station, Texas, August 12, 2014
 Back lit showy evening primrose (Oenothera speciosa) near Park Hudson Trail. College Station, Texas, July 24, 2014
 Showy evening primrose (Oenothera speciosa) under power lines near Park Hudson Trail. College Station, Texas, August 6, 2014
 Flat winter rosette of stemless evening primrose (Oenothera triloba) on Post Oak Trail in Lick Creek Park. College Station, Texas, February 9, 2023
 Showy evening primrose (Oenothera speciosa) on Lick Creek Greenway Trail. College Station, Texas, April 2, 2024
 Showy evening primrose (Oenothera speciosa) on Lick Creek Greenway Trail. College Station, Texas, April 23, 2024
 Flower of showy evening primrose (Oenothera speciosa) under power lines near Park Hudson Trail. College Station, Texas, August 6, 2014
 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
 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
 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
 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
 Reddish flat winter rosette of stemless evening primrose (Oenothera triloba) on Post Oak Trail in Lick Creek Park. College Station, Texas, February 9, 2023
 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
 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
 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
 Winter rosette of stemless evening primrose (Oenothera triloba) on a lawn on Lick Creek Greenway Trail. College Station, Texas, February 16, 2024
 Wood sorrel and stemless evening primrose (Oenothera triloba) on a lawn on Lick Creek Greenway Trail. College Station, Texas, February 16, 2024
 Cut-leaved evening primrose (Oenothera laciniata) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 5, 2022
 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, March 27, 2020
 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
 Yellow flower of evening primrose (Oenothera hookeri) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, July 7, 2022
 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
 Flowers of showy evening primrose (Oenothera speciosa) 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
 Showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, March 24, 2019
 Showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
 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
 Winter rosette of stemless evening primrose (Oenothera triloba) in Bee Creek Park. College Station, Texas, February 12, 2024
 Flower of showy evening primrose (Oenothera speciosa) in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
 White phenotype of showy evening primrose (Oenothera speciosa) in Bee Creek Park. College Station, Texas, April 18, 2023
 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
 Evening primrose (Oenothera) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 23, 2014
 Evening primrose (Oenothera) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Cut-leaved evening primrose flower (Oenothera laciniata) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Cut-leaved evening primrose (Oenothera laciniata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Cut-leaved evening primrose (Oenothera laciniata) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Cut-leaved evening primrose (Oenothera laciniata) in sew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Flowers of showy evening primrose (Oenothera speciosa) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 9, 2018
 Reddish winter rosette of stemless evening primrose (Oenothera triloba) in Bee Creek Park. College Station, Texas, February 12, 2024
 Cut-leaved evening primrose flower (Oenothera laciniata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 5, 2008
 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) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 10, 2014
 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
 Small yellow flower of evening primrose or Ludwigia(?) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 16, 2010
 Narrow-leaved pinweed (Lechea tenuifolia) in Lick Creek Park. College Station, Texas, May 17, 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
 Red fruits of narrow-leaved pinweed (Lechea tenuifolia) in Lick Creek Park. College Station, Texas, May 17, 2018
 Narrow-leaved pinweed (Lechea tenuifolia) with seeds in Lick Creek Park. College Station, Texas, May 17, 2018
 Yellow flowers of threadleaf coreopsis (thread-leaved tickseed, Coreopsis verticillata) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 22, 2015
 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
 Red basal leaves of stemless evening primrose (Oenothera triloba) with tiny black spots of fungus Cryptostictis oenotherae (Pestalotia oenotherae)(?) on a lawn on Lick Creek Greenway Trail. College Station, Texas, February 16, 2024
 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
 Close-up of red basal leaves of stemless evening primrose (Oenothera triloba) with tiny black spots of fungus Cryptostictis oenotherae (Pestalotia oenotherae)(?) on a lawn on Lick Creek Greenway Trail. College Station, Texas, February 17, 2024
 Reddish winter rosettes of stemless evening primrose (Oenothera triloba) with tiny black spots of fungus Cryptostictis oenotherae (Pestalotia oenotherae)(?) on a lawn on Lick Creek Greenway Trail. College Station, Texas, February 16, 2024
 Yellow evening primrose (Oenothera) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 10, 2009
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