Christine Mary Snow (Pilkington) (1902–1978) was an Oxford botanist who contributed to the study of geotropism and phyllotaxis. She is known for her co-development, with her husband Robin Snow, of the "Snow and Snow Rule": a new primordium (such as a leaf) appears in a plant as soon as and in the place where it has enough space to do so. In total, there is 1 recognized credit in film. On Cinestia you can browse Mary Snow's complete filmography — 1 film — and find where to wat…