![](../../pictures/archives/compress/2012/1118/jpeg/03t.jpg) Oak galls on a trail in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2012/1118/jpeg/04t.jpg) Accumulation of oak galls on a trail in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2014/1462/jpeg/05t.jpg) Galls on an oak leaf near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
![](../../pictures/archives/compress/2014/1462/jpeg/06t.jpg) Close up of galls on an oak leaf near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
![](../../pictures/archives/compress/2022/3124/jpeg/16t.jpg) Insect galls on fresh oak leaves at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
![](../../pictures/archives/compress/2021/2995/jpeg/21t.jpg) Galls (hollow blisters) on leaves of common ragweed (Ambrosia artemisiifolia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
![](../../pictures/archives/compress/2021/2998/jpeg/03t.jpg) Galls caused by eriophyid mites on leaves of common ragweed (Ambrosia artemisiifolia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
![](../../pictures/archives/compress/2021/2998/jpeg/09t.jpg) Leaves of common ragweed (Ambrosia artemisiifolia) with galls caused by eriophyid mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
![](../../pictures/archives/compress/2021/2998/jpeg/10t.jpg) Distorted leaves of common ragweed (Ambrosia artemisiifolia) with galls caused by eriophyid mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
![](../../pictures/archives/compress/2021/2995/jpeg/22t.jpg) Galls (numerous pale green warts) on leaves of common ragweed (Ambrosia artemisiifolia) caused by eriophyid gall mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
![](../../pictures/archives/compress/2012/1117/jpeg/23t.jpg) Lichen on a twig in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2021/3084/jpeg/20t.jpg) Brown and greenish galls of lichenicolous fungus Tremella parmeliarum on powdered ruffle lichen (Parmotrema hypotropum) on a bush of upland swamp-privet in semi-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
![](../../pictures/archives/compress/2023/3406/jpeg/22t.jpg) Narrow-leaf false dragonhead (Physostegia angustifolia(?)) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
![](../../pictures/archives/compress/2022/3124/jpeg/13t.jpg) 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
![](../../pictures/archives/compress/2020/2680/jpeg/07t.jpg) Salt moth caterpillar on a leaf of giant ragweed at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
![](../../pictures/archives/compress/2021/2998/jpeg/23t.jpg) Leaf of whitestar morning-glory (Ipomoea lacunosa) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
![](../../pictures/archives/compress/2021/2995/jpeg/19t.jpg) Jewel beetles (Buprestidae, Agrilus) on a woolly croton leaf at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
![](../../pictures/archives/compress/2012/1117/jpeg/26t.jpg) Wild buckwheat (Yerba colorado, Eriogonum) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2012/1118/jpeg/05t.jpg) Buffalo gourd (calabazilla, Cucurbita foetidissima) taken from Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2021/3026/jpeg/09t.jpg) Both sides of a leaf of Ipomoea lacunosa with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/2995/jpeg/20t.jpg) Jewel beetles (Buprestidae, genus Agrilus) on a leaf of Croton capitatus at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/08t.jpg) Close-up of a leaf of Ipomoea lacunosa with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/3016/jpeg/27t.jpg) Leaf-cutting (sharp-tailed) cuckoo bee Coelioxys (female) taken from bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/12t.jpg) Details of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/13t.jpg) Orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/11t.jpg) Pattern of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/10t.jpg) Texture of orange rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2012/1117/jpeg/18t.jpg) Berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2012/1118/jpeg/01t.jpg) Flowers of wild buckwheat (Yerba colorado, Eriogonum) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2021/3026/jpeg/16t.jpg) Orange spots of rust fungus Coleosporium ipomoeae on underside of a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/15t.jpg) Texture of orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/14t.jpg) Close-up of orange spots of rust fungus Coleosporium ipomoeae on a leaf of Ipomoea lacunosa at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2022/3135/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2021/3016/jpeg/03t.jpg) Kleptoparasitic leaf-cutting (sharp-tailed) cuckoo bee Coelioxys, female, on bluestem grass at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
![](../../pictures/archives/compress/2022/3135/jpeg/21t.jpg) 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
![](../../pictures/archives/compress/2021/3026/jpeg/18t.jpg) Flower of whitestar morning-glory (Ipomoea lacunosa) and a leaf with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2021/3026/jpeg/05t.jpg) Underside of a leaf of whitestar morning-glory (Ipomoea lacunosa) with rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2012/1117/jpeg/24t.jpg) Green berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2012/1118/jpeg/02t.jpg) Rusty flowers of wild buckwheat (Yerba colorado, Eriogonum) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2012/1117/jpeg/21t.jpg) Cluster of berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2022/3117/jpeg/19t.jpg) Underside of a leaf of spring scorpion grass (Myosotis macrosperma) with rust fungus Puccinia eatoniae var. myosotidis(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2022
![](../../pictures/archives/compress/2020/2824/jpeg/17t.jpg) Sand mounds of Texas leaf cutting ants Atta texana at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 4, 2020
![](../../pictures/archives/compress/2012/1117/jpeg/19t.jpg) Green and blue berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2012/1117/jpeg/20t.jpg) Dark blue berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2012/1117/jpeg/25t.jpg) Lichens and green berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
![](../../pictures/archives/compress/2021/3026/jpeg/21t.jpg) Whitestar morning-glory (Ipomoea lacunosa) with a flower and a leaf with orange spots from rust fungus Coleosporium ipomoeae at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
![](../../pictures/archives/compress/2022/3124/jpeg/06t.jpg) Rust fungus Puccinia eatoniae var. myosotidis(?) on underside of a leaf of spring scorpion grass (Myosotis macrosperma, Boraginaceae) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
![](../../pictures/archives/compress/2012/1103/jpeg/04t.jpg) Climbing hempvine (Mikania scandens) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
![](../../pictures/archives/compress/2012/1102/jpeg/23t.jpg) Globular flower of buttonbush (Cephalanthus occidentalis) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
![](../../pictures/archives/compress/2012/1102/jpeg/22t.jpg) Staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
![](../../pictures/archives/compress/2012/1103/jpeg/01t.jpg) Green flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
![](../../pictures/archives/compress/2014/1462/jpeg/28t.jpg) Small dark aphids on a leaf near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2014
![](../../pictures/archives/compress/2022/3260/jpeg/23t.jpg) Leaf cutting ant s highway on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 12, 2022
![](../../pictures/archives/compress/2012/1103/jpeg/05t.jpg) Close up of staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
![](../../pictures/archives/compress/2012/1102/jpeg/24t.jpg) Five-fingered morning glory (Ipomoea cairica) in area of marshes on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
![](../../pictures/archives/compress/2018/2407/jpeg/03t.jpg) Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 24, 2018
![](../../pictures/archives/compress/2019/2597/jpeg/30t.jpg) Shores of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2811/jpeg/10t.jpg) Vegetation at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/12t.jpg) Dry grasses at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2811/jpeg/25t.jpg) Dry oak trees at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/02t.jpg) Oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2019/2597/jpeg/08t.jpg) Cockleburs at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2019/2597/jpeg/05t.jpg) Dead oaks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2019/2597/jpeg/07t.jpg) Overgrown trail at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2019/2597/jpeg/04t.jpg) Dead oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2811/jpeg/07t.jpg) Sumpweed (Iva annua) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2020/2812/jpeg/05t.jpg) Fall colors at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/09t.jpg) Overgrown road at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2811/jpeg/26t.jpg) Shelter for horses at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/11t.jpg) Greenbrier (Smilax) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2811/jpeg/23t.jpg) Small oaks at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2020/2811/jpeg/24t.jpg) Oak and red cedar trees at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2020/2811/jpeg/19t.jpg) Sandy road at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/01t.jpg) Previously flooded area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2019/2597/jpeg/34t.jpg) Cyanobacteria Nostoc commune at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2019/2597/jpeg/31t.jpg) Frostweed (Verbesina virginica) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2023/3432/jpeg/15t.jpg) Weathered oak wood in sand on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, November 23, 2023
![](../../pictures/archives/compress/2019/2597/jpeg/03t.jpg) Frequently flooded area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2812/jpeg/13t.jpg) Tickseed sunflower (Bidens) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/06t.jpg) Shelter for horse riders at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2023/3432/jpeg/11t.jpg) Old oak stump at low water level on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, November 23, 2023
![](../../pictures/archives/compress/2020/2811/jpeg/14t.jpg) Red lovegrass (Eragrostis secundiflora) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2020/2811/jpeg/16t.jpg) Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2020/2811/jpeg/20t.jpg) Formely flooded oak forest at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2023/3432/jpeg/14t.jpg) Small sedge in sand on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, November 23, 2023
![](../../pictures/archives/compress/2019/2597/jpeg/10t.jpg) Rusty refridgerator(?) under greenbrier at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2023/3432/jpeg/12t.jpg) Some small sedge in sand on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, November 23, 2023
![](../../pictures/archives/compress/2020/2811/jpeg/13t.jpg) Wild buckwheat (Eriogonum annuum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/33t.jpg) Candy grass (Eragrostis cilianensis)(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2019/2597/jpeg/24t.jpg) Turbin lichen (Cladonia peziziformis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2811/jpeg/18t.jpg) Creeping cucumber (Melothria pendula) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2020/2812/jpeg/14t.jpg) Flowers of grass Paspalum plicatulum at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/13t.jpg) Hemisphaeric liverwort (Reboulia hemisphaerica) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2812/jpeg/01t.jpg) Bushy bluestem (Andropogon glomeratus) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2019/2597/jpeg/35t.jpg) Jelly like cyanobacteria Nostoc commune at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019
![](../../pictures/archives/compress/2020/2812/jpeg/03t.jpg) Seeds of salt-marsh fleabane at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2023/3432/jpeg/10t.jpg) Common creeping grass on sand on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, November 23, 2023
![](../../pictures/archives/compress/2020/2811/jpeg/02t.jpg) Morning Glory (Ipomoea cordatotriloba) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
![](../../pictures/archives/compress/2020/2812/jpeg/04t.jpg) Scarab beetles on horse dung at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
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