Here’s a sketch I made “literally” copying Le Corbusier’s own of the design for his father’s tomb, included in a letter to his mother.
In addition to the simple forms, what I like most of the design (and letter) were his notes on the selection of plant material and its careful thoughts on their placement; specially of the species selected for the joints.
Geraniums were picked since they symbolize the good that exists in everybody. While the other species, (yellow or white poppies, alpine pansy, primula or moss) Le Corbusier mentions they were his father’s favorite.