. . . . . . . . . "Rhytisma punctatum" . . "Acer macrophyllum" . . "Ben Phalan. 2017. Rhytisma punctatum growing on organism Acer macrophyllum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/7739843> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .