An illustration from the U.S. Fish and Wildlife Service “Biological Illustration” collection of chromista, which is a proposed kingdom of life. As in animal, vegetable, fungus….
This is, Wikipedia tells us, “controversial.” It was proposed in the 1980s as a group that included some kinds of algae and some kinds of protozoans, including Paramecium, the brain parasite Toxoplasma (the one people can get from cat poop), and the malaria parasite Plasmodium (the one people can get from mosquito bites). All of them are single-celled organisms that have organelles (which is to say, like, body parts) called plastids which contain chlorophyll and which are surrounded by membranes, and that have cilia with either two- or three-part tubular hairs.
Why this makes them a kingdom is beyond me but I am not a microbiologist. Some chromista can still photosynthesize, some can’t, but they all have chlorophyll inside. The idea is that they descended from cells that surrounded/enslaved smaller plant cells and used them to generate energy.
At any rate, this illustration reminds me of Hawaiian shirts and late 60s/early 70s fabric prints.