 Cucumber weed (Parietaria pensylvanica) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 15, 2023
 Cucumber weed (Parietaria pensylvanica) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 16, 2023
 Emerging cucumber weed (Parietaria pensylvanica) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 15, 2023
 Close-up of cucumber weed (Parietaria pensylvanica) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 16, 2023
 Shoots of cucumber weed (Parietaria pensylvanica) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 15, 2023
 Upper view of cucumber weed (Parietaria pensylvanica) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 15, 2023
 Seedlings of cucumber weed (Parietaria pensylvanica) on a path on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 23, 2023
 Fresh cucumber weed (Parietaria pensylvanica) among dry oak leaves on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 16, 2023
 Young shoots of blunt pellitory (Parietaria pensylvanica, Urticaceae) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2022
 Blunt pellitory (Parietaria pensylvanica) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Blunt pellitory (Parietaria pensylvanica, Urticaceae) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 14, 2020
 Blunt pellitory (Parietaria pensylvanica, Urticaceae) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2022
 Blunt pellitory (Parietaria pensylvanica, Urticaceae) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 14, 2020
 Blunt pellitory (Parietaria pensylvanica, Urticaceae) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Blunt pellitory (Parietaria pensylvanica, Urticaceae) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 Young plants of borage family on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Flower buds and young leaves of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Flower buds and young leaves of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Cucumber weed (Parietaria pensylvanica) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Squaw-weed flowers (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Young leaves of thistle (Cirsium) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Young leaves of bluebonnet (Lupinus) in dew on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Squaw-weed (Senecio ampullaceus) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Creeping cucumber (Melothria pendula) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
 Winter rosette of squaw-weed (Senecio ampullaceus) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2022
 Flower buds of squaw-weed (Senecio ampullaceus) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 18, 2021
 Close-up of young pad of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Top view of young pad of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Young pads of prickly pear cactus (Opuntia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Plants of hoary bowlesia (Bowlesia incana) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 6, 2024
 Young leaves of western soapberry tree (Sapindus saponaria var. drummondii) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Orange berry rust fungus Gymnoconia nitens on young leaves of blackberry on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Young leaves of peppervine at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Young leaves of hackberry at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Young leaves of coralberry at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Flower buds of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Unfolding flowers of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Flower buds of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Bougainvillea-like young leaves of buttonbush (Cephalanthus occidentalis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 14, 2020
 Rosette of hairy leaves of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Young leaves of blackjack oak (Quercus marilandica, black oak group) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 14, 2020
 lambsquarter weed (pigweed, Chenopodium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Mock Bishop s Weed (Ptilimnium nuttali) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Fruits (purple-black, olive-like drupe) on female plants of swamp privet (Forestiera acuminata) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 11, 2024
 Small reddish plants of spurge (Euphorbia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
 Basal leaves of squaw-weed (Senecio ampullaceus) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
 Flower buds of squaw-weed (Senecio ampullaceus) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Young leaves of cypress(?) elm on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Young hairy leaves of oak on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Young leaves of sage (Salvia)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Fruits (ribbed purple-black berries resembling beetle larvae) on female plants of swamp privet (Forestiera acuminata) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 11, 2024
 Creeping cucumber (Melothria pendula) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
 Spiderwort (Tradescantia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Former cattle pond on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Dead oak with greenbrier on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Young leaves of blackjack oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Young leaves of hackberry at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Leaves of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 15, 2023
 Leaves of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 16, 2023
 Young leaves of buttonbush (Cephalanthus occidentalis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Winged elm (Ulmus alata) with young leaves at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Falling dried oaks on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Oaks near mile post 2 on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Winecup flower (Callirhoe) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Spiderwort (Tradescantia) flowers on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Young leaves of honey locust (Gleditsia triacanthos) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 14, 2020
 Young golden ear mushrooms (Tremella aurantia) on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2020
 Young leaf and flower buds of mustang grape at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Young leaves of honey locust (Gleditsia triacanthos) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Young golden ear mushrooms (Tremella aurantia) under a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2020
 Rosette of basal leaves of thistle on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Leaves of coralberry (Symphoricarpos orbiculatus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Little quaking grass (Briza minor) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Beard lichen (Usnea) on an elm tree on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Woolly-white (Hymenopappus artemisiaefolius) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Blooming sow thistle (Sonchus oleraceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Blue flower of spiderwort (Tradescantia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Bluestar flowers (Amsonia tabernaemontana) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Flowers of woolly-white (Hymenopappus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Bluestar flowers (Amsonia tabernaemontana) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Violet flowers of spiderwort (Tradescantia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Indian paintbrush (Castilleja indivisa) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Carolina larkspur (Delphinium carolinianum) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Growth of red water fern (Azolla filiculoides) overgrowing other plants on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Flower and seeds of sow thistle (Sonchus oleraceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Blooming small skullcap (Scutellaria parvula) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Basal leaves of star thistle (Centaurea)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Reddish shoot of buttonbush (Cephalanthus occidentalis) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Crown tickseed flower (Coreopsis nuecensoides) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Small violet flowers of spiderwort (Tradescantia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Potato earthball mushrooms (Scleroderma bovista) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Showy evening primrose (Oenothera speciosa) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Baby blue eyes (Nemophila phacelioides) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Golden-eye lichen (Teloschistes chrysophthalmus) on a twig on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Rosette of leaves of evening primrose (oenothera)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 A moth on false dandelion (Pyrrhopappus carolinianus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2024
 Young growth of netted crust fungus (Byssomerulius corium) on a fallen oak twig at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
 White substance from animal droppings under a microscope (in KOH), collected on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
 Winter rosette of leaves of star thistle (Centaurea)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 2, 2024
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