Bastard pennyroyal (Trichostema dichotomum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 30, 2009
Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park, on sewage line right of way. College Station, September 17, 2008
Blue flowers with coiled stamens of Bastard pennyroyal (Trichostema dichotomum) on Little Lake Creek Loop Trail in Sam Houston National Forest. Huntsville, Texas, September 14, 2008
Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 24, 2012
Flowers of bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 24, 2012
Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 11, 2012
Blooming bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 11, 2012
Back lit flowers of bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 11, 2012
Flowers of bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 11, 2012
Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 9, 2012
Close up of flowers of bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, October 11, 2012
Fruits of bastard pennyroyal (Trichostema dichotomum) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, October 1, 2020
Bastard pennyroyal (Trichostema dichotomum) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, October 1, 2020
Seeds of bastard pennyroyal (Trichostema dichotomum) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 9, 2021
Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 26, 2022
Flower of bastard pennyroyal (Trichostema dichotomum) 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, September 17, 2024
Blooming bastard pennyroyal (Trichostema dichotomum) 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, September 17, 2024
Flowers of bastard pennyroyal (Trichostema dichotomum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 17, 2024
Bastard pennyroyal (Trichostema dichotomum) 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, September 17, 2024
Bastard pennyroyal (Trichostema dichotomum) 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 1, 2024
Blooming bastard pennyroyal (Trichostema dichotomum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 1, 2024
