![](../../pictures/archives/compress/2008/650/jpeg/22t.jpg) Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) near Deer Run Trail in Lick Creek Park. College Station, Texas, June 8, 2008
![](../../pictures/archives/compress/2012/1061/jpeg/21t.jpg) Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 22, 2012
![](../../pictures/archives/compress/2013/1227/jpeg/01t.jpg) Spiny button-like flowerheads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) near Deer Run Trail in Lick Creek Park. College Station, Texas, July 4, 2013
![](../../pictures/archives/compress/2008/652/jpeg/11t.jpg) Spiny button-like flower heads in umbels of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek park, on Deer Run Trail. College Station, June 15, 2008
![](../../pictures/archives/compress/2008/652/jpeg/01t.jpg) Spiny flowerhead of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, June 15, 2008
![](../../pictures/archives/compress/2019/2525/jpeg/09t.jpg) Spiny flowerhead of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
![](../../pictures/archives/compress/2010/866/jpeg/16t.jpg) Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 4, 2010
![](../../pictures/archives/compress/2019/2525/jpeg/11t.jpg) Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
![](../../pictures/archives/compress/2010/865/jpeg/22t.jpg) Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) with a butterfly in dew in Lick Creek Park. College Station, Texas, June 1, 2010
![](../../pictures/archives/compress/2019/2525/jpeg/10t.jpg) Flower heads in umbels of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 9, 2019
![](../../pictures/archives/compress/2014/1452/jpeg/17t.jpg) Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 10, 2014
![](../../pictures/archives/compress/2014/1448/jpeg/07t.jpg) Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 2014
![](../../pictures/archives/compress/2014/1453/jpeg/02t.jpg) Flowers of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 10, 2014
![](../../pictures/archives/compress/2014/1448/jpeg/15t.jpg) Close up of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 2014
![](../../pictures/archives/compress/2012/1110/jpeg/21t.jpg) Dry seed heads of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, October 11, 2012
![](../../pictures/archives/compress/2014/1448/jpeg/10t.jpg) Flower heads of button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 1, 2014
![](../../pictures/archives/compress/2012/1071/jpeg/22t.jpg) Spiny head of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 20, 2012
![](../../pictures/archives/compress/2012/1068/jpeg/16t.jpg) Spiny flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
![](../../pictures/archives/compress/2018/2280/jpeg/10t.jpg) Button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
![](../../pictures/archives/compress/2012/1068/jpeg/18t.jpg) Button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
![](../../pictures/archives/compress/2012/1068/jpeg/14t.jpg) Flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
![](../../pictures/archives/compress/2018/2280/jpeg/13t.jpg) Flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
![](../../pictures/archives/compress/2012/1068/jpeg/15t.jpg) Blooming button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
![](../../pictures/archives/compress/2012/1071/jpeg/23t.jpg) Umbels of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 20, 2012
![](../../pictures/archives/compress/2012/1053/jpeg/03t.jpg) Button snakeroot (Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, May 10, 2012
![](../../pictures/archives/compress/2018/2280/jpeg/14t.jpg) Flower head of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 3, 2018
![](../../pictures/archives/compress/2012/1068/jpeg/21t.jpg) Umbels of flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
![](../../pictures/archives/compress/2014/1452/jpeg/25t.jpg) Button snakeroot (Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 10, 2014
![](../../pictures/archives/compress/2012/1068/jpeg/13t.jpg) Dense apical umbel of flowers of button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, June 10, 2012
![](../../pictures/archives/compress/2013/1232/jpeg/05t.jpg) Button snakeroot (rattlesnake master, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, July 24, 2013
![](../../pictures/archives/compress/2014/1448/jpeg/14t.jpg) Delta flower scarab beetles (Trigonopeltastes delta) on button snakeroot in Lick Creek Park. College Station, Texas, July 1, 2014
![](../../pictures/archives/compress/2019/2533/jpeg/01t.jpg) Button mushrooms (Agaricus) in Lick Creek Park. College Station, Texas, June 21, 2019
![](../../pictures/archives/compress/2018/2295/jpeg/09t.jpg) Button of Amanita pubescens mushroom in Lick Creek Park. College Station, Texas, June 28, 2018
![](../../pictures/archives/compress/2021/2916/jpeg/20t.jpg) Canadian black snakeroot (Sanicula canadensis) in Lick Creek Park. College Station, Texas, April 22, 2021
![](../../pictures/archives/compress/2024/3505/jpeg/02t.jpg) Leaves of Canadian black snakeroot (Sanicula canadensis) in Lick Creek Park. College Station, Texas, March 31, 2024
![](../../pictures/archives/compress/2008/679/jpeg/26t.jpg) White mistflower (Ageratina havanensis, Havana snakeroot) with a caterpillar in Lick Creek Park. College Station, Texas, October 19, 2008
![](../../pictures/archives/compress/2020/2800/jpeg/07t.jpg) Boneset flowers (white snakeroot, Ageratina altissima) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, October 15, 2020
![](../../pictures/archives/compress/2008/676/jpeg/17t.jpg) White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, October 3, 2008
![](../../pictures/archives/compress/2019/2432/jpeg/05t.jpg) Button lichen (Buellia) in Lick Creek Park. College Station, Texas, January 18, 2019
![](../../pictures/archives/compress/2018/2372/jpeg/12t.jpg) Button of a mushroom Amanita pubescens in Lick Creek Park. College Station, Texas, October 3, 2018
![](../../pictures/archives/compress/2024/3632/jpeg/08t.jpg) White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 16, 2024
![](../../pictures/archives/compress/2019/2431/jpeg/14t.jpg) Common button lichen (Buellia stillingiana) on an oak in Lick Creek Park. College Station, Texas, January 18, 2019
![](../../pictures/archives/compress/2018/2375/jpeg/10t.jpg) Button mushrooms Agaricus sect. Xanthodermatei in Lick Creek Park. College Station, Texas, October 5, 2018
![](../../pictures/archives/compress/2019/2431/jpeg/06t.jpg) Common button lichen (Buellia stillingiana) (black) in Lick Creek Park. College Station, Texas, January 18, 2019
![](../../pictures/archives/compress/2019/2431/jpeg/03t.jpg) Common button lichen (Buellia stillingiana) on oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
![](../../pictures/archives/compress/2018/2315/jpeg/17t.jpg) Button stage (immature) mushrooms Amanita pubescens in Lick Creek Park. College Station, Texas, July 16, 2018
![](../../pictures/archives/compress/2019/2485/jpeg/12t.jpg) Button mushrooms (Agaricus) in Wolf Pen Creek Park. College Station, Texas, April 24, 2019
![](../../pictures/archives/compress/2022/3184/jpeg/12t.jpg) Green seeds with hooks of black snakeroot (Sanicula marilandica) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
![](../../pictures/archives/compress/2012/1072/jpeg/22t.jpg) Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, June 22, 2012
![](../../pictures/archives/compress/2014/1447/jpeg/19t.jpg) Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, June 30, 2014
![](../../pictures/archives/compress/2022/3186/jpeg/05t.jpg) Prickly seeds with hooks of Canadian black snakeroot (Sanicula canadensis) in Antique Rose Emporium. Independence, Texas, July 2, 2022
![](../../pictures/archives/compress/2022/3261/jpeg/01t.jpg) White mistflower (Ageratina havanensis, Havana snakeroot) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 15, 2022
![](../../pictures/archives/compress/2022/3131/jpeg/28t.jpg) Shoots of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022
![](../../pictures/archives/compress/2022/3131/jpeg/22t.jpg) Leaves of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022
![](../../pictures/archives/compress/2012/1072/jpeg/01t.jpg) Spiny flower bud of a thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 20, 2012
![](../../pictures/archives/compress/2022/3261/jpeg/02t.jpg) Blooming white mistflower (Ageratina havanensis, Havana snakeroot) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 15, 2022
![](../../pictures/archives/compress/2012/1069/jpeg/01t.jpg) Spiny globular flower bud of a thistle (Cirsium engelmannii) in Lick Creek Park. College Station, Texas, June 10, 2012
![](../../pictures/archives/compress/2008/653/jpeg/10t.jpg) Disk-shaped abdomen of crab spider (crablike spiny orb weaver, Gasteracantha elipsoides) on its net in Lick Creek Park, on Iron Bridge Trail. College Station, Texas, June 21, 2008
![](../../pictures/archives/compress/2010/851/jpeg/24t.jpg) Big spiny spider in Lick Creek Park. College Station, Texas, April 11, 2010
![](../../pictures/archives/compress/2010/851/jpeg/23t.jpg) Big spiny spider with a crane fly in Lick Creek Park. College Station, Texas, April 11, 2010
![](../../pictures/archives/compress/2014/1457/jpeg/18t.jpg) Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 15, 2014
![](../../pictures/archives/compress/2018/2266/jpeg/15t.jpg) Spiny puffball mushrooms (Lycoperdon americanum) in Lick Creek Park. College Station, Texas, May 24, 2018
![](../../pictures/archives/compress/2010/851/jpeg/25t.jpg) Big spiny spider eating a crane fly in Lick Creek Park. College Station, Texas, April 11, 2010
![](../../pictures/archives/compress/2014/1449/jpeg/03t.jpg) Flower of Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 3, 2014
![](../../pictures/archives/compress/2008/643/jpeg/06t.jpg) Cornflower (Centaurea cyanus, Bachelor s button, bluebottle, boutonniere flower, Hurtsickle) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 12, 2008
![](../../pictures/archives/compress/2008/644/jpeg/26t.jpg) Cornflower (Centaurea cyanus, Bachelor s button, bluebottle, boutonniere flower, Hurtsickle) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 18, 2008
![](../../pictures/archives/compress/2019/2482/jpeg/27t.jpg) Leaves of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, April 16, 2019
![](../../pictures/archives/compress/2010/859/jpeg/07t.jpg) Spiny spider eating black swallowtail butterflies in Lick Creek Park. College Station, Texas, May 13, 2010
![](../../pictures/archives/compress/2021/2951/jpeg/29t.jpg) Button stage of American slender Caesar mushroom (Amanita jacksonii) on Richards Loop Trail in Sam Houston National Forest. Texas, June 2, 2021
![](../../pictures/archives/compress/2014/1448/jpeg/25t.jpg) Hooker s eryngo (Eryngium hookeri) on Racoon Run Trail in Lick Creek Park. College Station, Texas, July 3, 2014
![](../../pictures/archives/compress/2014/1449/jpeg/04t.jpg) Prickly flowers of Hooker s eryngo (Eryngium hookeri) in Lick Creek Park. College Station, Texas, July 3, 2014
![](../../pictures/archives/compress/2018/2267/jpeg/02t.jpg) Spiny puffball mushrooms (Lycoperdon americanum) on sandy roadside in Lick Creek Park. College Station, Texas, May 24, 2018
![](../../pictures/archives/compress/2009/800/jpeg/09t.jpg) Red-banded Hairstreak (Calycopis cecrops) butterfly on white mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Caney Creek Trail in Sam Houston National Forest, near Huntsville. Texas, October 18, 2009
![](../../pictures/archives/compress/2009/751/jpeg/19t.jpg) Larkdaisy (Brazilian Button Flower, Centratherum intermedium, Centratherum punctatum) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, May 24, 2009
![](../../pictures/archives/compress/2008/688/jpeg/06t.jpg) Larkdaisy (Brazilian Button Flower, Centratherum intermedium, Centratherum punctatum) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, November 16, 2008
![](../../pictures/archives/compress/2009/785/jpeg/19t.jpg) Larkdaisy (Brazilian Button Flower, Centratherum intermedium, Centratherum punctatum) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, August 9, 2009
![](../../pictures/archives/compress/2009/800/jpeg/08t.jpg) Little wood satyr butterfly, Hermeuptychia (Euptychia) hermes, on white mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Caney Creek Trail in Sam Houston National Forest, near Huntsville. Texas, October 18, 2009
![](../../pictures/archives/compress/2024/3633/jpeg/10t.jpg) White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
![](../../pictures/archives/compress/2020/2744/jpeg/11t.jpg) Bur-like seed capsules with hooks of Canadian black snakeroot (Sanicula canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
![](../../pictures/archives/compress/2013/1297/jpeg/12t.jpg) Spiny branches of Coral fungus (Hericium coralloides mushroom) growing from a rotten log in Lick Creek Park. College Station, Texas, November 16, 2013
![](../../pictures/archives/compress/2019/2442/jpeg/02t.jpg) Button lichen (Buellia) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
![](../../pictures/archives/compress/2010/896/jpeg/16t.jpg) Bird nest shaped seeds of larkdaisy (Brazilian Button Flower, Centratherum intermedium, Centratherum punctatum) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, November 7, 2010
![](../../pictures/archives/compress/2019/2429/jpeg/04t.jpg) Button lichen (Buellia) on limestone near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/26t.jpg) Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/05t.jpg) Button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2016/1888/jpeg/11t.jpg) Button of fly agaric mushroom Amanita muscaria (Mukhomor in Russian) in Sosnovka Park. Saint Petersburg, Russia, August 25, 2016
![](../../pictures/archives/compress/2017/2159/jpeg/25t.jpg) Button stage of fly agaric mushroom (Amanita muscaria) in Park of Polytechnic Institute. Saint Petersburg, Russia, September 19, 2017
![](../../pictures/archives/compress/2019/2429/jpeg/03t.jpg) Button lichen (Buellia) on limestone rock near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/06t.jpg) Patches of button lichen (Buellia) on a limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/28t.jpg) Button lichen (Buellia) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2009/811/jpeg/25t.jpg) Freeze on a purple flower of larkdaisy (Brazilian Button Flower, Centratherum intermedium, Centratherum punctatum) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, December 5, 2009
![](../../pictures/archives/compress/2020/2633/jpeg/20t.jpg) Small soft button-like polypore mushrooms on underside of a pine log in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020
![](../../pictures/archives/compress/2018/2389/jpeg/29t.jpg) Young Amanita stirps Sororcula mushroom (button stage) on a trail in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, October 28, 2018
![](../../pictures/archives/compress/2020/2633/jpeg/21t.jpg) Close-up of small soft button-like polypore mushrooms on underside of a pine log in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020
![](../../pictures/archives/compress/2023/3350/jpeg/09t.jpg) Sunken button lichen (Buellia spuria) on a sandstone rock at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
![](../../pictures/archives/compress/2023/3350/jpeg/17t.jpg) Close-up of sunken button lichen (Buellia spuria) on rocks at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, February 26, 2023
![](../../pictures/archives/compress/2020/2639/jpeg/23t.jpg) Button lichen (Buellia) on a rock in a forest in area of sandstone outcrops at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
![](../../pictures/archives/compress/2019/2466/jpeg/33t.jpg) Button lichen (Buellia) on sandstone of Fehr s Overlook Shelter in Bastrop State Park. Bastrop, Texas, March 14, 2019
![](../../pictures/archives/compress/2018/2302/jpeg/28t.jpg) Button of a young mushroom Amanita rhoadsii(?) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 7, 2018
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