I was going through the first chapter of the book Graphical Enumeration by Frank Harary and Edgar M. Palmer when I chanced upon this perplexing footnote:Put Down the Carving Knife by Singing SadieJustin Maxwell "Pillow Filter” (Pretension)Some species of day lily have edible flowers (don’t eat the leaves or stems). The Chinese use them in stirfries, soup and more. It’s best to make sure you have the right variety as some lily species are poisonous.