Black-eyed susan (Rudbeckia hirta) and Mock Bishop s Weed (Ptilimnium nuttali) near Post Oak Trail at sunrise in Lick Creek Park. College Station, Texas, May 18, 2012
Western Horse Nettle (Potato-weed, Solanum dimidiatum) near Deer Run Trail in Lick Creek Park. College Station, Texas, June 8, 2008
Self-Heal (Carpenter-weed, Prunella vulgaris) on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
Self-Heal (Carpenter-weed, Prunella vulgaris) on Big Creek Loop Trail in Brazos Bend State Park. Needville, Texas, April 11, 2009
Black-eyed susan (Rudbeckia hirta) and Mock Bishop s Weed (Ptilimnium nuttali) near Post Oak Trail in Lick Creek Park. College Station, Texas, May 18, 2012
Horse nettle (potato-weed, Solanum) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
Potato-weed (western horse nettle, Solanum dimidiatum) in Lick Creek Park, on Deer Run Trail. College Station, Texas, June 21, 2008
Black-eyed susan and Mock Bishop s Weed near Post Oak Trail in Lick Creek Park. College Station, Texas, May 18, 2012
Frost-weed (Verbesina virginica) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, September 12, 2008
Black eyed susans (Rudbeckia hirta) and Mock bishop s weed (Ptilimnium nuttallii) flowers near Post Oak Trail in Lick Creek Park. College Station, Texas, May 27, 2007
Black-eyed susan (Rudbeckia hirta) and Mock Bishop s Weed (Ptilimnium nuttali) on Post Oak Trail in Lick Creek Park. College Station, Texas, May 27, 2010
Flower buds of Cutleaf groundsel (butterweed, squaw weed, Senecio) on Deer Run Trail in Lick Creek Park. College Station, Texas, April 29, 2009
Self-Heal (Carpenter-weed, Prunella vulgaris) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
Marsh weeds in mist, view from Marsh Overlook Trail in Barataria Preserve, south from New Orleans, Louisiana, May 21, 2006
Potato-weed (solanum) damaged by snout beetles on Deer Run Trail in Lick Creek Park. College Station, Texas, September 30, 2008
Weeds along a trail to Ramon Crater south from Mitzpe Ramon. The Middle East, February 1, 2001
Weeds colonizing burnt forest at Roosevelt s Cutoff Trail in Bastrop State Park. Bastrop, Texas, September 15, 2012
Horse nettle (potato-weed, Solanum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
Black eyed susan flowers (Rudbeckia hirta) with Mock bishop s weed (Ptilimnium nuttallii) near Post Oak Trail in Lick Creek Park. College Station, Texas, May 27, 2007
Horse nettle (potato-weed, Solanum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
Field of Black eyed susan and Mock bishop s weed (Ptilimnium nuttallii) near Post Oak Trail in Lick Creek Park. College Station, Texas, May 7, 2012
Black eyed susans (Rudbeckia hirta) and Mock bishop s weed (Ptilimnium nuttallii) at Post Oak Trail in Lick Creek Park. College Station, Texas, May 10, 2012
Black-eyed susan (Rudbeckia hirta) and Mock Bishop s Weed (Ptilimnium nuttali) at Post Oak Trail in Lick Creek Park. College Station, Texas, May 18, 2012
Weeds and vines on Park Hudson Trail. College Station, Texas, July 4, 2014
Seeds of chamberbitter weeds (stonebreaker, Phyllanthus niruri) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019
Alligator s head and aquatic weeds from Elm Lake Loop Trail in Brazos Bend State Park. Needville, Texas, March 12, 2020
Chamberbitter weeds (stonebreaker, Phyllanthus niruri) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019
Hairy bittercress weed (Cardamine hirsuta) in a water pool on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 7, 2021
Basal leaves of hairy bittercress weed (Cardamine hirsuta) in a water pool on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 7, 2021
Hairy bittercress weed (Cardamine hirsuta, mustard family) in a water pool in Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 20, 2022
Various weeds and flat winter rosettes on a lawn on Lick Creek Greenway Trail. College Station, Texas, February 16, 2024
Leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
Spores and tissues (at low magnification) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
Spores (in Congo Red) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
Spores (in lugol) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) from white spots on leaves of squaw-weed (Senecio ampullaceus) collected on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, February 17, 2024
Early blooming winter annual weed hairy bittercress (Cardamine hirsuta) in a shallow depression on side of FS203 near Richards Loop Trail in Sam Houston National Forest. Texas, February 21, 2024
