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Red Star-Thistle. Detailed plant classification, national distribution maps, status as invasive plant and noxious weed. From the USDA PLANTS data base.
Photographic study by Brian Johnston of Centaurea jacea, with many fine images of the flowers, and microscopic images of the inflorescence and pollen grains.
Identifying photographs for Centaurea calcitrapa. From King County, Washington, Department of Natural Resources.
Red Star-Thistle. Detailed plant classification, national distribution maps, status as invasive plant and noxious weed. From the USDA PLANTS data base.
Identifying photographs for Centaurea calcitrapa. From King County, Washington, Department of Natural Resources.
Photographic study by Brian Johnston of Centaurea jacea, with many fine images of the flowers, and microscopic images of the inflorescence and pollen grains.
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May 14, 2023 at 5:15:07 UTC
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Regional: Oceania: New Zealand: Auckland: Localities: Silverdale
- Recently edited by shedragon
- Recently edited by shedragon