Taxa: Crataegus collina, Crataegus collina var. collina, Crataegus collina var. hirtiflora, Crataegus collina var. lettermanii (Crataegus collina var. secta), Crataegus collina var. sordida, Crataegus collina var. succincta
Google Maps is a web mapping service provided by Google that features a map that users can pan (by dragging the mouse) and zoom (by using the mouse wheel). Collection points are displayed as colored markers that when clicked on, displays the full information for that collection. When multiple species are queried (separated by semi-colons), different colored markers denote each individual species.