Robert Whittaker in 1969 put forth the “Five Kingdoms of Life”. The hyperlink is to that post. The “Plant Kingdom” is of multicellular eukaryotes. “Photosynthetic Periodicity” in the table above includes unicellular prokaryotes in a domain of three kingdoms.
All of the divisions above are edible vegetation. In Japanese cookery, Red, Green & Brown algae are essential (non-tracheophyte, sea veggies). Indian cookery, on the other hand, uses only Tracheophytes (land vegetation).
