Red flowers of vervain (verbena) in Antique Rose Emporium. Independence, Texas, November 8, 2009
Rose vervain (Verbena canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, Texas, February 22, 2009
Close up of a cluster of flowers of rose vervain (Verbena canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, Texas, February 22, 2009
Blue Princess Verbena (vervain) in Antique Rose Emporium. Independence, Texas, May 13, 2012
Blue Princess verbena (Vervain) in Antique Rose Emporium. Independence, Texas, May 28, 2012
Omnivorous platynota moth (Platynota rostrana) on verbena (vervain) in Antique Rose Emporium. Independence, Texas, May 28, 2012
Verbena (vervain) in Antique Rose Emporium. Independence, Texas, May 13, 2012
Pink vervain (Verbena) in Antique Rose Emporium. Independence, Texas, November 17, 2012
Verbena (vervain) with Omnivorous platynota moth (Platynota rostrana) in Antique Rose Emporium. Independence, Texas, May 28, 2012
Rose vervain (Glandularia canadensis) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
Rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
Flowers of rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
Pink vervain (verbena) in Antique Rose Emporium. Independence, Texas, March 20, 2019
Rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
Flowers of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
Vervain (Verbena) in Antique Rose Emporium. Independence, Texas, March 31, 2020
Flower of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, February 16, 2019
Rose vervain (Glandularia canadensis) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
Flowers of vervain (verbena) in Antique Rose Emporium. Independence, Texas, March 20, 2019
White and red vervain (verbena) in Antique Rose Emporium. Independence, Texas, March 20, 2019
Rose vervain (Glandularia canadensis) in dew on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
Rose vervain (Glandularia canadensis) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021
Vervain (Verbena) in Antique Rose Emporium. Independence, Texas, April 14, 2021
Flowers of vervain (Verbena) in Antique Rose Emporium. Independence, Texas, April 14, 2021
Flowers of rose vervain (Glandularia canadensis) on Forest Service Road 231 near North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 5, 2022
Rose vervain (Glandularia canadensis) on Forest Service Road 231 near North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 5, 2022
Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
Rose vervain (Glandularia canadensis) on North Wilderness Trail in Sam Houston National Forest near Montgomery. Texas, April 14, 2022
Flowers of rose vervain (Glandularia canadensis) on North Wilderness Trail in Sam Houston National Forest near Montgomery. Texas, April 14, 2022
Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, February 28, 2023
Rose vervain (Glandularia canadensis) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
Pink flowers of rose vervain (Glandularia canadensis) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
Purpletop vervain (Verbena bonariensis) in Antique Rose Emporium. Independence, Texas, April 13, 2023
Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
Blooming rose vervain (Glandularia canadensis) on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 5, 2024
Rose vervain (Glandularia canadensis) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
Blooming rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
Vervain (Verbena bonariensis) in Antique Rose Emporium. Independence, Texas, April 20, 2024
Rose vervain (Glandularia canadensis) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
Rose vervain (Glandularia canadensis) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 13, 2025
Flowers of rose vervain (Glandularia canadensis) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest near Montgomery. Texas, March 1, 2026
Verbena (vervain) in Antique Rose Emporium. Independence, Texas, March 5, 2026
Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026
