There’s a fern with 1260 chromosomes!
I did not know that.
I thought the most genetically complex plant was the orchid.
On the other hand I was taught that one of the simplest plants was the cannabis plant, but I admit to bias.
More chromosomes doesn’t necessarily mean more complex. Plants tend to go through whole genome duplications more so than animals.
Strictly speaking, I think yeast is a fungus.
Some have proposed the fungi as a third kingdom in addition to plants and animals.