bristle thistle (Cirsium horridulum) observed in Boy Scout Road Boardwalk Trail, Lacombe, LA, US
iNaturalist: rangerbecky
Citizen Science
Bristle thistle is a native wildflower that supports specialist bees, goldfinches, and monarch butterflies — so knowing where it grows helps local conservationists protect the habitat corridors these animals depend on.
Someone walking a boardwalk trail in Lacombe, Louisiana came across a bristle thistle and logged it on iNaturalist, where enough experts confirmed the ID to make it 'research-grade.' Bristle thistle is a spiky but striking native plant that blooms in shades of yellow, purple, or pink and is a magnet for pollinators. This kind of citizen-science sighting helps build a living map of where native plants are thriving in the wild.
Key Findings
A research-grade observation of Cirsium horridulum (bristle thistle) was recorded at Boy Scout Road Boardwalk Trail in Lacombe, Louisiana.
The observation reached 'research-grade' status on iNaturalist, meaning it was verified by multiple community identifiers.
The sighting is located in a coastal Louisiana wetland-edge habitat, consistent with the species' preference for moist, disturbed, or open areas in the southeastern US.
chevron_right Technical Summary
A bristle thistle (Cirsium horridulum) was spotted and confirmed at the Boy Scout Road Boardwalk Trail in Lacombe, Louisiana. This community-verified observation adds to regional records of this native North American thistle.
Abstract Preview
Research-grade observation of bristle thistle in Boy Scout Road Boardwalk Trail, Lacombe, LA, US.
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Species Mentioned
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Cirsium horridulum, called bristly thistle, purple thistle, or yellow thistle is a North American species of plants in the tribe Cardueae within the family Asteraceae. It is an annual or biennial. The species is native to the eastern and southern United States from New England to Florida, Texas, ...