This presentation was made for student members of the PVMA’s Fungikingdom University Spring workshops on April 9, 2017. It was updated to present to COMA’s Mushroom University students for 4/14/18. It was again updated for a presentation given to the Boston Mycological Club on 4/45/19. It focuses on the identifying macro-characteristics of species of Lactarius and Lactifluus common in the northeastern section of North America. It will undergo changes as additional information becomes available and more species are correctly identified. University professors, high school teachers, home-school parents and mycology students are invited to use this program for teaching provided the author is first contacted and is credited. email: dianna.smith@comcast.net .