hemlock varnish shelf (Ganoderma tsugae) Ganoderma tsugae, also known as Hemlock varnish shelf, is a flat polypore mushroom of the genus Ganoderma. Source: https://www.inaturalist.org/observations/126243537 Related By Wade Hi. I’m Wade Murray, and like everyone with a personal website, mine is horribly, terribly out of date. On the Internet my handle is normally wademurray, but you can still find blime in some of the older dustier places. View all of Wade's posts.