Micro-orchids! (Platystele genus)
The bitty thing on the bottom has petals only one cell thick. They’re transparent because it’s hard to get color into something so thin.
The guy who discovered it actually didn’t even see it. It hitchhiked in on another, tiny-but-less-tiny-than-this-one orchid that he was studying, and he didn’t even notice it until it started blooming. Even then, he was like “Oh, what new interesting thing is the orchid I’m working on developing now?”
And then *pow* new micro-orchid.
The gonzo shapes and colors and blooming patterns that we see in orchids tend to come from the highly-specialized and extremely diverse nature of their pollinators. Like, some orchids trick bees and flies into trying to have sex with them or eat them in order to get pollinated, other orchids provide a food reward that’s only accessible to one specific type of bird or insect.
Presumably whatever pollinates these little bastards is extremely fucking tiny because, seriously, whoa.