Petals under direct exposure.
The images show petals from a yellow flower (suspected to be hisbiscus), under direct light (generated using a mobile-phone flashlight). The sample was obtained from the plantations near the Avery House residence at Caltech’s campus (1200 East California Boulevard, Pasadena, CA) around 7:00 pm local time (CA) on May 31st, 2019. The flower was cut using a scissor, and the petal was flattened using a cotton swab.
Note the gradient of the color of cellular material.
#caltechbi1


Location from where the flower was extracted.