Oxford Dictionaries Online's word of the day a few days ago (sign up here) was galanthophile, which means 'a collector of, or expert in, snowdrops', Galanthus being the genus name of the snowdrop. The first part of the word comes from the Greek word for milk, γάλα (gala), and so, interestingly, does the word galaxy, which, more precisely, is from the Greek for 'milky circle' or 'milky one'. Originally, galaxy referred to the Milky Way alone; according to the OED, "The existence of galaxies as separate systems analogous to and outside of the Milky Way system was proposed in the 19th cent. but not proved until the first meaningful determinations of the distances of galaxies by E. P. Hubble in the 1920s.". The classical Latin lact- meaning milk, is related.