![](../../pictures/archives/compress/2010/846/jpeg/13t.jpg) Groundsel (butterweed, squaw weed, Senecio) with spider web in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2010.
![](../../pictures/archives/compress/2021/2888/jpeg/24t.jpg) Opening flowers of groundsel (butterweed, squaw weed, Senecio) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
![](../../pictures/archives/compress/2021/2888/jpeg/12t.jpg) Flower buds of groundsel (butterweed, squaw weed, Senecio) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
![](../../pictures/archives/compress/2009/735/jpeg/07t.jpg) Cutleaf groundsel (butterweed, squaw weed, Senecio) in Lick Creek Park. College Station, Texas, April 16, 2009
![](../../pictures/archives/compress/2009/739/jpeg/20t.jpg) Flower buds of Cutleaf groundsel (butterweed, squaw weed, Senecio) on Deer Run Trail in Lick Creek Park. College Station, Texas, April 29, 2009
![](../../pictures/archives/compress/2023/3356/jpeg/02t.jpg) Squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
![](../../pictures/archives/compress/2019/2460/jpeg/23t.jpg) Flowers of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
![](../../pictures/archives/compress/2022/3119/jpeg/10t.jpg) Blooming squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2022
![](../../pictures/archives/compress/2021/2888/jpeg/13t.jpg) Blooming squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
![](../../pictures/archives/compress/2008/621/jpeg/24t.jpg) Squaw-weed flower (Senecio ampullaceus) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
![](../../pictures/archives/compress/2022/3119/jpeg/07t.jpg) Flower buds of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2022
![](../../pictures/archives/compress/2024/3480/jpeg/07t.jpg) Flower buds of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2024/3480/jpeg/09t.jpg) Shoot of squaw-weed (Senecio ampullaceus) with flower buds in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
![](../../pictures/archives/compress/2022/3114/jpeg/13t.jpg) Basal rosette of leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
![](../../pictures/archives/compress/2024/3457/jpeg/13t.jpg) Leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 7, 2024
![](../../pictures/archives/compress/2022/3109/jpeg/08t.jpg) Leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
![](../../pictures/archives/compress/2008/627/jpeg/25t.jpg) Squaw-weed flower (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 5, 2008
![](../../pictures/archives/compress/2021/2857/jpeg/10t.jpg) Rosette of leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
![](../../pictures/archives/compress/2023/3340/jpeg/01t.jpg) Rosette of leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
![](../../pictures/archives/compress/2023/3339/jpeg/12t.jpg) Unfolding leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
![](../../pictures/archives/compress/2021/2857/jpeg/11t.jpg) Winter rosette of leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
![](../../pictures/archives/compress/2021/2865/jpeg/02t.jpg) Basal rosette of leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
![](../../pictures/archives/compress/2023/3356/jpeg/22t.jpg) Squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
![](../../pictures/archives/compress/2018/2239/jpeg/18t.jpg) Bluebonnets and cutleaf groundsel flowers near Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2023/3356/jpeg/23t.jpg) Underside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
![](../../pictures/archives/compress/2018/2239/jpeg/19t.jpg) Field of bluebonnets and cutleaf groundsel flowers from a fence of Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2023/3356/jpeg/21t.jpg) Leaves of squaw-weed (Senecio ampullaceus) with light yellow areas on leaves caused by sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
![](../../pictures/archives/compress/2008/625/jpeg/14t.jpg) Squaw-weed flowers in Washington-on-the-Brazos Historic Site. Washington, Texas, March 30, 2008
![](../../pictures/archives/compress/2018/2239/jpeg/25t.jpg) Prickly peas cactus (Opuntia) with yellow Senecio(?) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
![](../../pictures/archives/compress/2009/724/jpeg/24t.jpg) Poison ivy near Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/01t.jpg) Bluebonnets at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/03t.jpg) Field of bluebonnets at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/724/jpeg/26t.jpg) Field of wildflowers at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/06t.jpg) Wildflowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/04t.jpg) Field of wildflowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/724/jpeg/25t.jpg) Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/02t.jpg) Field of bluebonnets and paintbrush flowers at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/725/jpeg/05t.jpg) Field of bluebonnets and paintbrush flowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2020/2809/jpeg/10t.jpg) Groundsel bush (seepwillow, Baccharis halimifolia) with seeds in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
![](../../pictures/archives/compress/2020/2809/jpeg/11t.jpg) Fluffy seeds of groundsel bush (seepwillow, Baccharis halimifolia) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
![](../../pictures/archives/compress/2023/3339/jpeg/24t.jpg) Cucumber weed (Parietaria pensylvanica) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
![](../../pictures/archives/compress/2008/631/jpeg/19t.jpg) White bishops weed-like flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
![](../../pictures/archives/compress/2018/2244/jpeg/24t.jpg) Salt Marsh Moth caterpillar (Estigmene acrea) on Senecio(?) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
![](../../pictures/archives/compress/2009/725/jpeg/07t.jpg) Carriage in mist in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/724/jpeg/22t.jpg) Pond at morning in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/723/jpeg/11t.jpg) Field of wildflowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2009/724/jpeg/23t.jpg) Forest near a pond dam in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2009/717/jpeg/23t.jpg) Stork s bill (geranium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 8, 2009
![](../../pictures/archives/compress/2009/719/jpeg/25t.jpg) Young leaf of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 15, 2009
![](../../pictures/archives/compress/2009/717/jpeg/21t.jpg) Buttercup flower near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 8, 2009
![](../../pictures/archives/compress/2009/725/jpeg/08t.jpg) Old Ferry Road in mist in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
![](../../pictures/archives/compress/2010/865/jpeg/01t.jpg) Yellow Water-weed (Ludwigia peploides) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 29, 2010
![](../../pictures/archives/compress/2009/723/jpeg/15t.jpg) Corn salad (valerianella) flowers in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2009/723/jpeg/16t.jpg) Pink spiderwort (tradescantia) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2009/722/jpeg/24t.jpg) Scarlet pimpernel (Anagallis arvensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2009
![](../../pictures/archives/compress/2010/888/jpeg/22t.jpg) Back lit yellow Water-weed (Ludwigia peploides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2010
![](../../pictures/archives/compress/2010/888/jpeg/21t.jpg) Yellow Water-weed (Ludwigia peploides) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2010
![](../../pictures/archives/compress/2009/719/jpeg/24t.jpg) Rain drop on a leaf of bluebonnet (lupine) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 15, 2009
![](../../pictures/archives/compress/2009/723/jpeg/17t.jpg) Stamens of a pink spiderwort (tradescantia) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2009/723/jpeg/13t.jpg) Indian paintbrush (Castilleja indivisa) and bluebonnets in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2009/730/jpeg/03t.jpg) Photographer with a tripod taking pictures of a field of bluebonnets at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2009
![](../../pictures/archives/compress/2009/723/jpeg/14t.jpg) Indian paintbrush (Castilleja indivisa) near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2009/719/jpeg/22t.jpg) Shoot of Virginia creeper vine on a tree, with patches of various lichens in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 15, 2009
![](../../pictures/archives/compress/2009/719/jpeg/23t.jpg) Shoot of Virginia creeper vine on a tree covered by bark lichens in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 15, 2009
![](../../pictures/archives/compress/2023/3358/jpeg/32t.jpg) Tissues (in Melzer) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
![](../../pictures/archives/compress/2023/3358/jpeg/30t.jpg) Spores an conidia(?) (in KOH) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
![](../../pictures/archives/compress/2009/717/jpeg/22t.jpg) Pink ten-petal anemone (Anemone heterophylla) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 8, 2009
![](../../pictures/archives/compress/2009/723/jpeg/12t.jpg) Flower of red buckeye (Southern buckeye, Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
![](../../pictures/archives/compress/2023/3358/jpeg/31t.jpg) Spores (in Melzer) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) together with conidia of Alternaria leaf spot(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023
![](../../pictures/archives/compress/2009/746/jpeg/01t.jpg) Shoot of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
![](../../pictures/archives/compress/2009/814/jpeg/16t.jpg) Mistletoe in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 12, 2009
![](../../pictures/archives/compress/2009/781/jpeg/05t.jpg) Butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 19, 2009
![](../../pictures/archives/compress/2009/801/jpeg/01t.jpg) Pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 24, 2009
![](../../pictures/archives/compress/2009/748/jpeg/25t.jpg) Ripening dewberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2009
![](../../pictures/archives/compress/2009/745/jpeg/11t.jpg) Flower of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
![](../../pictures/archives/compress/2009/801/jpeg/03t.jpg) Dam of a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 24, 2009
![](../../pictures/archives/compress/2009/806/jpeg/10t.jpg) A pond from a dam in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 13, 2009
![](../../pictures/archives/compress/2009/742/jpeg/04t.jpg) Magnolia flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
![](../../pictures/archives/compress/2009/806/jpeg/08t.jpg) A pond at morning in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 13, 2009
![](../../pictures/archives/compress/2009/809/jpeg/09t.jpg) Trail through a forest in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 23, 2009
![](../../pictures/archives/compress/2009/806/jpeg/05t.jpg) Foggy pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 13, 2009
![](../../pictures/archives/compress/2009/751/jpeg/01t.jpg) Slender vervain (verbena) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
![](../../pictures/archives/compress/2009/806/jpeg/06t.jpg) A pond at sunrise in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 13, 2009
![](../../pictures/archives/compress/2009/806/jpeg/07t.jpg) Dry leaf near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 13, 2009
![](../../pictures/archives/compress/2009/814/jpeg/15t.jpg) Berries of mistletoe in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 12, 2009
![](../../pictures/archives/compress/2009/781/jpeg/06t.jpg) Close up of a butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 19, 2009
![](../../pictures/archives/compress/2009/784/jpeg/01t.jpg) Robber Fly (Laphria) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 1, 2009
![](../../pictures/archives/compress/2009/750/jpeg/25t.jpg) White flowers on a bush in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2009
![](../../pictures/archives/compress/2009/801/jpeg/05t.jpg) Forest near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 24, 2009
![](../../pictures/archives/compress/2009/806/jpeg/09t.jpg) Forest near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 13, 2009
![](../../pictures/archives/compress/2009/806/jpeg/11t.jpg) A pond from a dam at sunrise in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 13, 2009
![](../../pictures/archives/compress/2009/742/jpeg/05t.jpg) White magnolia flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
![](../../pictures/archives/compress/2009/742/jpeg/03t.jpg) Thistle flower (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
![](../../pictures/archives/compress/2009/742/jpeg/01t.jpg) Horse nettle(?) (Solanum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
![](../../pictures/archives/compress/2009/801/jpeg/02t.jpg) Pond at morning in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 24, 2009
![](../../pictures/archives/compress/2009/809/jpeg/01t.jpg) Forest in mist in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 23, 2009
![](../../pictures/archives/compress/2009/790/jpeg/25t.jpg) Milkweed seeds in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 6, 2009
![](../../pictures/archives/compress/2009/730/jpeg/04t.jpg) False dandelion with a bee in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2009
![](../../pictures/archives/compress/2009/742/jpeg/06t.jpg) Green leaves of magnolia in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
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