 Sunflower (Helianthus annuus) in Lick Creek Park. College Station, Texas, July 7, 2012
 Blooming sunflower (Helianthus) in Lick Creek Park. College Station, Texas, August 1, 2021
 Beetle of yellow petals of sunflower (Helianthus) in Bee Creek Park. College Station, Texas, August 5, 2021
 Velvet Queen Sunflower (Helianthus annuus) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, April 28, 2024
 Sunflower (Helianthus annuus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 31, 2021
 Blooming sunflower (Helianthus annuus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 31, 2021
 Seed head of sunflower (Helianthus annuus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 31, 2021
 Common sunflower (Helianthus annuus) in Onaiza area. Doha, Qatar, March 24, 2016
 Blooming common sunflower (Helianthus annuus) in Onaiza area. Doha, Qatar, March 24, 2016
 Sunflower (Helianthus annuus) in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Common sunflower (Helianthus annuus) in Lake Bryan Park. Bryan, Texas, July 31, 2014
 Close up of sunflower (Helianthus annuus) in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Petals of sunflower (Helianthus annuus) in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Sunflower (Helianthus annuus) under power lines in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Sunflower (Helianthus annuus) under power lines in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Close up of petals of sunflower (Helianthus annuus) in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Disk flowers of common sunflower (Helianthus annuus) in Onaiza area. Doha, Qatar, March 24, 2016
 Yellow flower of common sunflower (Helianthus annuus) in Onaiza area. Doha, Qatar, March 24, 2016
 Petals of sunflower (Helianthus annuus) under power lines in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Sunflower (Helianthus annuus)on a cutting under power lines in Lake Bryan Park. Bryan, Texas, July 20, 2014
 Common sunflower (Helianthus annuus) on roadside near Twar Mall in Um Lekhba neighborhood. Doha, Qatar, February 29, 2016
 Blooming common sunflower (Helianthus annuus) on roadside near Twar Mall in Um Lekhba neighborhood. Doha, Qatar, February 29, 2016
 Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, August 25, 2021
 Maximilian sunflower (Helianthus maximiliani) on a forest clearing in Lick Creek Park. College Station, Texas, August 28, 2020
 Flower head of common sunflower (Helianthus annuus) on roadside near Twar Mall in Um Lekhba neighborhood. Doha, Qatar, February 29, 2016
 Blooming Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, August 25, 2021
 Sunflower (Helianthus) in the Gardens at Texas A and M University. College Station, Texas, August 10, 2021
 Blooming Maximilian sunflower (Helianthus maximiliani) on a forest clearing in Lick Creek Park. College Station, Texas, August 28, 2020
 Sunflower (Helianthus) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 11, 2021
 Sunflower (Helianthus annuus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Sunflower (Helianthus annuus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Sunflower (Helianthus annuus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Common sunflower (Helianthus annuus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Common sunflower (Helianthus annuus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 8, 2012
 Flower of common sunflower (Helianthus annuus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 19, 2012
 Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 21, 2021
 Sunflower (Helianthus) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Leach Teaching Gardens at Texas A and M University. College Station, Texas, August 25, 2024
 Seeds of tickseed sunflower (Bidens) in Lick Creek Park. College Station, Texas, August 12, 2021
 Seed head of tickseed sunflower (Bidens) in Lick Creek Park. College Station, Texas, August 12, 2021
 Sunflower (Helianthus) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 1, 2020
 Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 22, 2022
 Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 6, 2019
 Dry seeds of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Dry plant of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Dry leaves of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Sunflower (Helianthus) in Leach Teaching Gardens at Texas A and M University. College Station, Texas, May 12, 2024
 Dry hairy leaves of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Dried plants of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Dry flower head of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Close-up of dry seeds of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Sunflowers (Helianthus annuus) on Tom Moore Road. Washington, Texas, May 24, 2020
 Petals of sunflower (Helianthus) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 9, 2012
 Back lit petals of sunflower (Helianthus) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 9, 2012
 Texture of dry hairy leaves of Maximilian sunflower (Helianthus maximiliani) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Flowers of Maximilian sunflower (Helianthus maximiliani) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 18, 2024
 Center of Maximilian sunflower (Helianthus maximiliani) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 18, 2024
 Blooming Maximilian sunflower (Helianthus maximiliani) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 18, 2024
 Maximilian sunflower (Helianthus maximiliani) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 18, 2024
 Sunflower (Helianthus) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Sunflower bud on sewage line right of way in Lick Creek Park. College Station, Texas, August 23, 2020
 Sunflower on Deer Run Trail near a bridge in Lick Creek Park. College Station, Texas, August 28, 2008
 Sunflower (Helianthus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 27, 2019
 Petals of sunflower (Helianthus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 27, 2019
 Prairie sunflower (Helianthus petiolaris)(?) on a sand pile at the beginning of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Seed head of prairie sunflower (Helianthus petiolaris)(?) on a sand pile at the beginning of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Tickseed sunflower (Bidens) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Shoots of Maximilian sunflower(?) in Lick Creek Park. College Station, Texas, March 7, 2023
 Rosette of leaves of a plant of sunflower family in Lick Creek Park. College Station, Texas, March 2, 2023
 Some plant similar to sunflower on a sewage line right of way in Lick Creek Park. College Station, Texas, July 18, 2020
 Sunflower in TAMU Holistic Garden in Texas A and M University. College Station, Texas, August 1, 2009
 Sunflower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 16, 2013
 Sunflower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 11, 2009
 Bumblebee on Mexican Sunflower (Tithonia rotundifolia) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, August 3, 2008
 Orange flower of Mexican Sunflower (Tithonia rotundifolia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 11, 2009
 Orange flower of Tithonia rotundifolia (Mexican Sunflower) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, August 15, 2010
 Some grass in Lick Creek Park. College Station, Texas, August 12, 2021
 Some orange shoot in Lick Creek Park. College Station, Texas, August 1, 2021
 Red aphids on frostweed in Lick Creek Park. College Station, Texas, August 12, 2021
 Morning Glory (Ipomoea cordatotriloba) in Bee Creek Park. College Station, Texas, August 5, 2021
 Vine Desmodium paniculatum in Lick Creek Park. College Station, Texas, August 4, 2021
 Flower of thistle (Cirsium) in Lick Creek Park. College Station, Texas, August 4, 2021
 Rattlebush shoot (Sesbania) in Lick Creek Park. College Station, Texas, August 4, 2021
 Shoot of sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, August 12, 2021
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 9, 2021
 Beautyberry (Callicarpa americana) in Lick Creek Park. College Station, Texas, August 4, 2021
 Coffeeweed (Sesbania herbacea)(?) in Lick Creek Park. College Station, Texas, August 26, 2021
 Cicada fallen from a tree in Wolf Pen Creek Park. College Station, Texas, August 2, 2021
 Turkey s cap (Malvaviscus drummondii) in Lick Creek Park. College Station, Texas, August 1, 2021
 Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, August 26, 2021
 Partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, August 9, 2021
 Leaves of sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, August 4, 2021
 Young leaves of sycamore in Lick Creek Park. College Station, Texas, August 1, 2021
 Shoot of sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, August 4, 2021
 Partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, August 1, 2021
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Leaves of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Many-spiked sedge (Cyperus polystachyos) in Lick Creek Park. College Station, Texas, August 1, 2021
 Some sedge (Cyperus) on Post Oak Trail in Lick Creek Park. College Station, Texas, August 1, 2021
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