Flowers of stickleaf (blazing star) Mentzelia texana(?) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas

🎞️ #3620-17
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Lake Somerville, Texas, September 14 - 14, 2024

Album 3620: Lake Somerville, Texas, September 14 - 14, 2024

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The image is a comparison of two photographs of flowers under different lighting conditions. The top photograph shows the flowers in natural light, while the bottom photograph shows them illuminated by a blacklight with a wavelength of 365 nanometers (UV-A).

**Top Photograph**

* The flowers are yellow and have five petals each.
* They appear to be growing on a green stem or branch, but the exact nature of this structure is unclear due to the low resolution of the image.
* There are several leaves visible in the background, which are also green.

**Bottom Photograph**

* The same flowers are now illuminated by UV-A blacklight.
* Under this light, the petals glow a bright orange color, while the leaves and stems remain invisible.
* The overall effect is one of stark contrast between the natural and artificial lighting conditions.

Overall, the image highlights the unique properties of certain plants that respond to different wavelengths of light. While some plants may appear dull or unremarkable in natural light, they can exhibit vibrant colors under UV-A illumination. This phenomenon has important implications for our understanding of plant biology and ecology. – AI vision

🇪🇸 Descripción en español / Spanish Description

Las flores de hoja pegajosa (estrella ardiente) Mentzelia texana(?) tanto en luz natural como bajo la luz ultravioleta (UV-A) negra de 365 nm del Birch Creek Unit of Somerville Lake State Park. Texas, septiembre 14, 2024. La imagen es una comparación de dos fotografías de flores en diferentes condiciones de iluminación. La fotografía superior muestra las flores en luz natural, mientras que la fotografía inferior las muestra iluminadas por una luz negra con una longitud de onda de 365 nanómetros (UV-A).

**Fotografía superior** * Las flores son amarillas y tienen cinco pétalos cada una. * Parecen crecer en un tallo o rama verde, pero la naturaleza exacta de esta estructura no está clara debido a la baja resolución de la imagen. * Hay varias hojas visibles en segundo plano, que también son verdes.

**Fotografía inferior** * Las mismas flores ahora están iluminadas por UV-A blacklight. * Bajo esta luz, los pétalos emiten un color naranja brillante, mientras que los tallos y las hojas permanecen invisibles. * El efecto general es uno de contraste entre las condiciones naturales y artificiales de iluminación.

En general, la imagen destaca las propiedades únicas de ciertas plantas que responden a diferentes longitudes de onda de luz. Mientras que algunas plantas pueden parecer oscuras o sin importancia en condiciones naturales, pueden mostrar colores vibrantes bajo iluminación UV-A. Este fenómeno tiene importantes implicaciones para nuestra comprensión de la biología y ecología vegetal. – Spanish translation

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