White mistflower (Ageratina havanensis) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas

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College Station - Sam Houston Forest, Texas, October 9 - 10, 2024

Album 3630: College Station - Sam Houston Forest, Texas, October 9 - 10, 2024

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The image showcases two photographs of white mistflower flowers side by side. The left photograph features a cluster of small, white flowers with long stamens and green leaves against a black background, illuminated by daylight. In contrast, the right photograph displays the same cluster under ultraviolet (UV-A) light from a 365 nm blacklight, revealing that the flowers glow blue.

The image highlights the unique property of white mistflower blooms to emit light when exposed to UV-A radiation in the dark. This phenomenon is known as bioluminescence and occurs in certain plant species, allowing them to attract pollinators or defend against herbivores at night.

Overall, the image demonstrates how different lighting conditions can reveal new details about the appearance of white mistflower flowers, showcasing their distinctive bioluminescent property. – AI vision

🇪🇸 Descripción en español / Spanish Description

Flor de niebla blanca (Ageratina havanensis) cuando se expone a la luz diurna regular y cuando se ilumina con una luz negra ultravioleta (UV-A) de 365 nm en la sección Caney Creek del sendero Lone Star Hiking Trail en el bosque nacional Sam Houston al norte de Montgomery, Texas, el 10 de octubre de 2024. La imagen muestra dos fotografías de flores de flor de niebla blanca lado a lado. La fotografía izquierda presenta un racimo de pequeñas flores blancas con largos estambres y hojas verdes sobre fondo negro, iluminadas por la luz del día. Por el contrario, la fotografía derecha muestra el mismo racimo bajo luz ultravioleta (UV-A) de una linterna negra de 365 nm, revelando que las flores brillan de azul. La imagen resalta la propiedad única de las flores de flor de niebla blanca para emitir luz cuando se exponen a radiación UV-A en la oscuridad. Este fenómeno se conoce como bioluminiscencia y ocurre en ciertas especies de plantas, permitiéndoles atraer polinizadores o defenderse contra herbívoros por la noche. En general, la imagen demuestra cómo diferentes condiciones de iluminación pueden revelar nuevos detalles sobre el aspecto de las flores de flor de niebla blanca, mostrando su propiedad distintiva de bioluminiscencia. – Spanish translation

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