 Cardinal flower (Lobelia cardinalis) in Alligator Branch of Lake Raven in Huntsville State Park on Chinquapin Trail. Texas, October 4, 2008
 Cardinal flower (Lobelia cardinalis) near Caney Creek Trail in Sam Houston National Forest, near Huntsville. Texas, September 30, 2007
 Cardinal flower (Lobelia cardinalis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, October 3, 2009
 Cardinal flower (Lobelia cardinalis) on Caney Creek Trail in Sam Houston National Forest, near Huntsville. Texas, October 18, 2009
 Cardinal flower (Lobelia cardinalis) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, October 26, 2013
 Cardinal flower (Lobelia cardinalis) in Huntsville State Park on Chinquapin Trail. Texas, October 10, 2009
 Close up of cardinal flower (Lobelia cardinalis) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, October 26, 2013
 Cardinal flower (Lobelia cardinalis) found near a creek on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, October 26, 2013
 Cardinal flower (Lobelia cardinalis) in area of floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, September 22, 2018
 Cardinal flower (Lobelia cardinalis) on dark background in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, October 20, 2019
 Cardinal flower (Lobelia cardinalis) in wet area on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 17, 2020
 Cardinal flower (Lobelia cardinalis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 26, 2020
 Cardinal flower (Lobelia cardinalis) on floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 31, 2019
 Cardinal flower (Lobelia cardinalis) near a creek on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 14, 2019
 Back lit cardinal flower (Lobelia cardinalis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 14, 2019
 Cardinal flower (Lobelia cardinalis) in wet area in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, October 20, 2019
 Cardinal flower (Lobelia cardinalis) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
 Cardinal flower (Lobelia cardinalis) on floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
 Cardinal flower (Lobelia cardinalis) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, October 1, 2020
 Cardinal flower (Lobelia cardinalis) near a creek on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2021
 Cardinal flower (Lobelia cardinalis) near Alum Creek in Lick Creek Park. College Station, Texas, September 22, 2021
 Blooming cardinal flower (Lobelia cardinalis) near Alum Creek in Lick Creek Park. College Station, Texas, September 22, 2021
 Cardinal flower (Lobelia cardinalis) in bloom near Alum Creek in Lick Creek Park. College Station, Texas, September 22, 2021
 Fruits of cardinal flower (Lobelia cardinalis) near Alum Creek in Lick Creek Park. College Station, Texas, September 22, 2021
 Close-up of cardinal flower (Lobelia cardinalis) near Alum Creek in Lick Creek Park. College Station, Texas, September 22, 2021
 Inflorescence of cardinal flower (Lobelia cardinalis) near Alum Creek in Lick Creek Park. College Station, Texas, September 22, 2021
 Cardinal flower (Lobelia cardinalis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 23, 2022
 Cardinal flower (Lobelia cardinalis) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 13, 2024
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