Mushroom CU on Rock Springs - Neighbor's Yard

 About 2 weeks ago I spotted this mushroom in my neighbor's yard.  Have never seen one like it before and have no clue about names of cultivars for mushrooms. It was about 8" x 6 ".  Native camera app.
Postprocessing with PSE 11: cropped, increased highlights and midtowns slightly, sharpened.  It does have soft covering of the projections.