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
Spot-sided coreid bug (Hypselonotus punctiventris) on yankeeweed (Eupatorium compositifolium) in Lick Creek Park. College Station, Texas, October 29, 2010
Mistflower (Eupatorium coelestinum) on Prairie Trail in Brazos Bend State Park. Needville, Texas, July 4, 2008
Mistflower (Eupatorium coelestinum, Wild ageratum) in Lick Creek Park. College Station, Texas, September 16, 2012
Mistflower (wild ageratum, Eupatorium) in Lick Creek Park. College Station, Texas, September 30, 2008
Blue flowers of mistflower (Eupatorium coelestinum, Wild ageratum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
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
Spring sprout of round-leaved thoroughwort (Eupatorium rotundifolium)(?) in Big Thicket park on Sundew Trail. Texas, April 26, 2008
Mistflower (Eupatorium) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, October 14, 2012
Mistflower (Eupatorium coelestinum) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008
Mistflower (Eupatorium coelestinum, Wild ageratum) in Lick Creek Park. College Station, Texas, September 12, 2008
Spotted cucumber beetle (Diabrotica undecimpunctata) on masses of flowers of yankeeweed (Eupatorium compositifolium) in Lick Creek Park. College Station, Texas, October 29, 2010
Ventral view of Whitebanded Crab Spider (Misumenoides formosipes) on yankeeweed (Eupatorium compositifolium) in Lick Creek Park. College Station, Texas, October 29, 2010
Mistflower (blue boneset, Eupatorium coelestinum) in dew in Lick Creek Park. College Station, Texas, September 30, 2008
Mistflower (wild ageratum, Eupatorium) in Lick Creek Park. College Station, Texas, October 19, 2008
Green lynx spider on Late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, August 26, 2009
Whitebanded Crab Spider (Misumenoides formosipes) on yankeeweed (Eupatorium compositifolium) in Lick Creek Park. College Station, Texas, October 29, 2010
Mistflower (Eupatorium coelestinum, Wild ageratum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
Late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, July 30, 2008
White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, October 3, 2008
Mistflower (blue boneset, Conoclinium coelestinum, Eupatorium) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 30, 2008
Mistflower (Eupatorium coelestinum, Wild ageratum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
Mistflower (Eupatorium coelestinum) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
Mistflower (blue boneset, Conoclinium coelestinum, Eupatorium) in Lick Creek Park. College Station, Texas, October 11, 2012
Joe-Pye weed (trumpetweed, Eutrochium fistulosum, Eupatorium fistulosum) in Watson Rare Native Plant Preserve. Warren, Texas, August 2, 2014
Late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, August 3, 2014
Late-flowering boneset (Eupatorium serotinum) on Park Hudson Trail. College Station, Texas, August 6, 2014
Joe-Pye weed (trumpetweed, Eupatorium maculatum) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, September 11, 2016
Mistflower (wild ageratum, Eupatorium) in Lick Creek Park. College Station, Texas, October 12, 2018
Joe-Pye weed (trumpetweed, Eutrochium fistulosum, Eupatorium fistulosum) in Watson Rare Native Plant Preserve. Warren, Texas, June 22, 2019
Blooming Joe-Pye weed (trumpetweed, Eutrochium fistulosum, Eupatorium fistulosum) in Watson Rare Native Plant Preserve. Warren, Texas, June 22, 2019
Mistflower (Eupatorium coelestinum, Wild ageratum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 21, 2019
Late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, August 23, 2020
Ermine moth Ailanthus webworm (Atteva punctella) oate-flowering boneset (Eupatorium serotinum) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 6, 2019
Dog fennel (Eupatorium capillifolium) on Forest Service Road 203 in Sam Houston National Forest. Texas, July 12, 2020
Late-flowering boneset (Eupatorium serotinum) on a sewage line right of way in Lick Creek Park. College Station, Texas, July 18, 2020
Late-flowering boneset (Eupatorium serotinum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
Late-flowering boneset (Eupatorium serotinum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
Mistflower (wild ageratum, Eupatorium) in a ditch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 9, 2020
Blooming late-flowering boneset (Eupatorium serotinum) on sewage line right of way in Lick Creek Park. College Station, Texas, August 23, 2020
White flowers late-flowering boneset (Eupatorium serotinum) on sewage line right of way in Lick Creek Park. College Station, Texas, August 23, 2020
Late-flowering boneset (Eupatorium serotinum) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
Seeds of late-flowering boneset (Eupatorium serotinum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 16, 2020
Dog fennel (Eupatorium capillifolium) with seeds in Lick Creek Park. College Station, Texas, November 22, 2020
Fluffy seeds of dog fennel (Eupatorium capillifolium) in Lick Creek Park. College Station, Texas, November 22, 2020
Dry seeds of dog fennel (Eupatorium capillifolium) in Lick Creek Park. College Station, Texas, November 22, 2020
Seeds of late-flowering boneset (Eupatorium serotinum)(?) in Lick Creek Park. College Station, Texas, November 22, 2020
Dry plants of dog fennel (Eupatorium capillifolium) on a forest clearing in Lick Creek Park. College Station, Texas, December 11, 2020
Dry seeds of dog fennel (Eupatorium capillifolium) on a forest clearing in Lick Creek Park. College Station, Texas, December 11, 2020
Shoot of dog fennel (Eupatorium capillifolium) on a pipeline right-of-way in Lick Creek Park. College Station, Texas, April 12, 2021
Late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, August 4, 2021
Late-flowering boneset (Eupatorium serotinum) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
Mistflower (Eupatorium coelestinum, Wild ageratum) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
Late-flowering boneset (Eupatorium serotinum) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
Late-flowering boneset (Eupatorium serotinum) in bloom on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
Late-flowering boneset (Eupatorium serotinum) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 17, 2021
Late-flowering boneset (Eupatorium serotinum) on sewage line right-of-way in Lick Creek Park. College Station, Texas, August 26, 2021
Jagged ambush bug (Phymata) on late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, September 6, 2021
Mistflower (Eupatorium coelestinum, wild ageratum) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
Blooming mistflower (Eupatorium coelestinum, wild ageratum) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
Mistflower (Eupatorium coelestinum, Wild ageratum) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
Mistflower (Eupatorium coelestinum, Wild ageratum) in Lick Creek Park. College Station, Texas, September 22, 2021
Blooming mistflower (Eupatorium coelestinum, Wild ageratum) in Lick Creek Park. College Station, Texas, September 22, 2021
Inflorescence of mistflower (Eupatorium coelestinum, Wild ageratum) in Lick Creek Park. College Station, Texas, September 22, 2021
Mistflower (Eupatorium coelestinum, Wild ageratum) on Richards Loop Trail in Sam Houston National Forest. Texas, September 23, 2021
Shoots of dog fennel (Eupatorium capillifolium) on a pipeline right-of-way in Lick Creek Park. College Station, Texas, April 11, 2022
Late-flowering boneset (Eupatorium serotinum) with rust fungus Coleosporium steviae(?) on a pipeline clearing in Lick Creek Park. College Station, Texas, May 15, 2022
Rust fungus Coleosporium steviae(?) on leaves of late-flowering boneset (Eupatorium serotinum) on a pipeline clearing in Lick Creek Park. College Station, Texas, May 15, 2022
Rust fungus Coleosporium steviae(?) on underside of a leaf of late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, May 15, 2022
Tissues and spores of rust fungus Coleosporium steviae(?) from Eupatorium serotinum collected in Lick Creek Park. College Station, Texas, May 15, 2022
Spores of rust fungus Coleosporium steviae(?) from Eupatorium serotinum under a microscope, collected in Lick Creek Park. College Station, Texas, May 15, 2022
Various spores of rust fungus Coleosporium steviae(?) from Eupatorium serotinum under a microscope, collected in Lick Creek Park. College Station, Texas, May 15, 2022
Shoot of round-leaved boneset (roundleaf thoroughwort, Eupatorium rotundifolium) in Watson Rare Native Plant Preserve. Warren, Texas, June 25, 2022
Felty shoot of common boneset (Eupatorium perfoliatum) on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
Late-flowering boneset (Eupatorium serotinum) with flower buds in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, July 12, 2022
Late-flowering boneset (Eupatorium serotinum) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 22, 2022
Mistflower (Eupatorium coelestinum) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
Common boneset (Eupatorium perfoliatum) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
Blooming mistflower (Eupatorium coelestinum) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
Mistflower (Eupatorium coelestinum) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
Mistflower (Eupatorium coelestinum) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
Blooming mistflower (Eupatorium coelestinum) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
Fresh leaves of round-leaved thoroughwort (Eupatorium rotundifolium) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
Shoot of round-leaved thoroughwort (Eupatorium rotundifolium) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
Flowers of round-leaved thoroughwort (Eupatorium rotundifolium) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
Blooming round-leaved thoroughwort (Eupatorium rotundifolium) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
Late-flowering boneset (Eupatorium serotinum)(?) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
Mistflower (Eupatorium coelestinum) on Lone Star Hiking Trail east from Trailhead 3 in Sam Houston National Forest near Montgomery. Texas, October 9, 2022
Blooming mistflower (Eupatorium coelestinum) on Lone Star Hiking Trail east from Trailhead 3 in Sam Houston National Forest near Montgomery. Texas, October 9, 2022
Yankeeweed (coastal dog fennel, Eupatorium compositifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, October 18, 2022
Mistflower (ageratum, Eupatorium) in Antique Rose Emporium. Independence, Texas, April 13, 2023
Dry plant of late-flowering boneset (Eupatorium serotinum) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
Blooming late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, September 13, 2023
Dry seeds of boneset (Eupatorium) on Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
Fluffy seeds of dog fennel (Eupatorium capillifolium) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
Dog fennel (Eupatorium capillifolium) 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 13, 2024
Blooming dog fennel (Eupatorium capillifolium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 13, 2024
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
Seeds of late-flowering boneset (Eupatorium serotinum)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
Dog fennel (Eupatorium capillifolium) 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 22, 2024
