The name comes from the Latin word "folium" which means "leaf". The species name derived from the Latin terms "longus" "long", and "folium" "leaf". In geometry, the Hessian curve is a plane curve similar to folium of Descartes. The specific epithet is derived from the Latin words "latus" "wide" and "folium" "leaf". The specific name is derived from the Latin words "pinus" "pine" and "folium" "leaf". The epithet "rotundifolia" is from New Latin "rotundus" ("round") plus "folium" ("leaf"). The inscription reads "Siccabitur ut folium" (he will be shrivelled like a leaf). The specific epithet ("acutifolia") is from the Latin "acutus" meaning "pointed" and "folium" meaning "leaf". The superior semilunar lobules and the folium vermis form the lobus semilunaris. Its species name is derived from the Latin words "quercus" "oak", and "folium" "leaf". The specific epithet ("longifolia") is derived from the Latin words "longus" "long" and "folium" "leaf". Its specific epithet 'myrtle-leaved' is derived from the Latin "myrtus" 'myrtle', and "folium" 'leaf'. The folium of Descartes is related to the trisectrix of Maclaurin by affine transformation. Each ridge or gyrus in this layer is called a folium. Since the folium is symmetrical about formula 3, it passes through the point formula 10.