Taking a second look at that sunflower
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First, for the sake of comparison, here’s what the edge of one of the green bracts ringing the back of the sunflower’s head looked like through my 60x-100x-magnification clip-on microscope:
Now here are two bract-edge photos taken with my 200x-500x USB scope (it’s a Measurement eScope DP-M07) at 500x magnification:
I didn’t get around to looking at the bract surface farther from the edge with the clip-on microscope, but here’s a photo taken with the USB microscope:
As for the immature disk florets that comprise the sunflower’s center, below is one of the clip-on scope photos which I’ve already posted. It’s followed by one of the higher-magnification images taken using the 200x-500x-magnification USB scope:
Under the illumination of the clip-on scope’s single LED, they were shiny and black. They’re still shiny when seen through the USB microscope but seem pinkish beneath the glare of its ring of eight LEDs.