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Stickleaf (blazing star) Mentzelia texana when exposed ...

Stickleaf (blazing star) Mentzelia texana when exposed  ...

Stickleaf (blazing star) Mentzelia texana(?) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024



The above image presents two photographs of the same plant under different lighting conditions: normal daylight and UV-A blacklight illumination.

**Image Details**

* The top photograph features a yellow flower with green leaves.
* The bottom photograph features an orange-pink flower with blue-green fuzz on its leaves, set against a dark background.

**Plant Identification**

The plant in the image is likely Stickleaf (blazing star), Mentzelia texana. However, this cannot be confirmed due to the lack of information about the location and time of year.

**Blacklight Illumination**

Blacklights are typically used to illuminate objects with fluorescent properties that absorb ultraviolet light but emit visible light or other forms of electromagnetic radiation when exposed to it. The UV-A wavelength (365 nm) is commonly used for this purpose, as it is a relatively safe range of ultraviolet radiation for human exposure.

**Image Comparison**

The comparison between the two photographs shows how the plant's appearance changes under different lighting conditions. In normal daylight, the flower appears yellow, but when exposed to UV-A blacklight, its color shifts to orange-pink, and the fuzz on its leaves becomes more visible. This suggests that the plant has fluorescent properties that are only visible under UV light.

**Conclusion**

The image highlights the unique characteristics of the Stickleaf (blazing star) Mentzelia texana plant, which can be observed in different ways depending on the lighting conditions. The use of blacklight illumination reveals new details about the plant's appearance and behavior, providing a deeper understanding of its biology and ecology. – AI vision

Lake Somerville, Texas ... 2024
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