I’ve been meaning to read this for forever and then I missed the chance to download it the year that worldcon was/n’t in NZ and now I have it in paperback and I am very glad that I finally read this weird and glorious book that never did what I expected. 
Also I sort of love biologically based horror. And this isn’t horror per se although it is very very weird and it clearly fits into that era where everyone was slightly terrified of mushrooms.