 Flower of butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2008
 Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Flower of Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Back lit flower of Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Butterfly pea (Centrosema virginianum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019
 Flower of Butterfly pea (Centrosema virginianum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Flower of butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019
 Close-up of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Blooming butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Back lit butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Blooming butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Blooming butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Close up of a flower of Butterfly pea (Centrosema virginianum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Close-up of a flower of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Back lit flower of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Flowers and green fruits of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, August 21, 2020
 Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Butterfly pea (Centrosema virginianum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
 Flower of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Flower of butterfly pea (Centrosema virginianum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
 Blooming butterfly pea (Centrosema virginianum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
 Close-up of a flower of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Butterfly pea (Centrosema virginianum) and bracken fern on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Shoot of butterfly pea (Centrosema virginianum)(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
 Flower of butterfly pea (Centrosema virginianum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 2024
 Butterfly pea (Centrosema virginianum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019
 Flower of butterfly pea (Centrosema virginianum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019
 Butterfly pea (Centrosema virginianum) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, June 22, 2021
 Blooming butterfly pea (Centrosema virginianum) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, June 22, 2021
 Flower of butterfly pea (Centrosema virginianum) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, June 22, 2021
 Large flower of butterfly pea (Centrosema virginianum) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, June 22, 2021
 Flower of butterfly pea (Centrosema virginianum) among bracken fern on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, June 22, 2021
 Butterfly pea (Centrosema virginianum) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, August 4, 2018
 Butterfly pea (Centrosema virginianum) flower in Lick Creek park, on Deer Run Trail. College Station, June 15, 2008
 Shoot of butterfly pea (Centrosema virginianum) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Seedling of butterfly pea (Centrosema virginianum) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, July 10, 2014
 Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, July 21, 2019
 Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, July 1, 2014
 Flower of butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, July 21, 2019
 Butterfly pea (Centrosema virginianum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 14, 2020
 Butterfly pea (Centrosema virginianum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
 Butterfly pea (Centrosema virginianum) on Park Hudson Trail. College Station, Texas, August 6, 2014
 Close up of Butterfly pea (Centrosema virginianum) on Park Hudson Trail. College Station, Texas, August 6, 2014
 Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, June 30, 2012
 Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, June 9, 2019
 Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, June 14, 2012
 Sun through mist from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Cutting from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Sunrise from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Back lit Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, June 14, 2012
 Flower of Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, June 14, 2012
 Little Lake Creek Loop Trail at misty morning in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Misty sunrise from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Burned pines from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Leaves and a flower of Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, June 14, 2012
 Close up of a flower of Butterfly pea (Centrosema virginianum) in Lick Creek Park. College Station, Texas, June 14, 2012
 Pine trees at sunrise from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Pine trees in mist from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Pine tree trunks from Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Western ironweed (Vernonia baldwini) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Small yellow flowers of agrimony (Agrimonia) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Western ironweed (Vernonia baldwini) flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Ripening fruits of beautyberry (Callicarpa americana) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Yellow and green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Opening flower of blue waterleaf (Hydrolea ovata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 St. Andrew cross (Ascyrum hypericoides, Hypericum) flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Young flowers of narrow-leaf gayfeather (Liatris mucronata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Opening flowers of narrow-leaf gayfeather (Liatris mucronata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Yellow and green passion flower (Passiflora lutea), with corona and pistil, on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Tiny white flowers of rustweed (juniper leaf, Polypremum procumbens) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Handeless coneflower (Echinacea sanguinea) with hairstreak butterfly in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Narrow-leaf gayfeather (Liatris mucronata), close up of flowers with imbricated phyllaries enclosing each cluster, on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Small yellow flower of pea family (Pencil flower, Stylosanthes biflora) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Butterfly pea (Centrosema virginianum) in Bastrop State Park. Bastrop, Texas, May 12, 2012
 Small lake in pine forest in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, January 26, 2008
 Butterfly pea (Centrosema virginianum) in Bastrop State Park. Bastrop, Texas, June 16, 2012
 Goldenrod in dew in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, October 4, 2008
 Pines in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, January 26, 2008
 Green lynx spider preying on a skipper butterfly on Purple dewdrop (Lobelia puberula) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
 Butterfly pea (Centrosema virginianum) west from Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, June 16, 2012
 Butterfly pea (Centrosema virginianum) west from Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, June 16, 2012
 Autumn asters in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, October 4, 2008
 False boneset(?) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008
 Pine cone in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008
 Yellow star-grass in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
 Boneset(?) flowers in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008
 Sprout of arrowwood in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008
 Erect dayflower in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008
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