Hi, oh Fabulous Fungurus... This appeared after about a week of steady rains in my lawn in Ambato, Ecuador - 3,000 meters above sea level. It's very odd for a mushroom to pop up here, as the the area is technically a desert, with ambient humidity is normally less than 40% and it's rarely wet enough to support the large mycellia required for large fruiting bodies like this one. It's pretty much a "classic" mushroom, as far as I can tell. The whole fruiting body, measured from as deep into the grass as I could get, was about 15 cm tall, with the cap representing about 3 cm of that height. The cap was about 5-6 cm in diameter. The gills are a pale bone-colour, and leave a beige to white spore print. The cap bruised to a medium beige and has a pleasant, mild scent reminiscent of commercial button mushrooms. Any clues, folks? If it's an edible, I'll move it and its surrounding soil to a less-travelled area of the garden so that it can develop and I can harvest and eat it. Otherwise I'll leave it where it is and not worry about stepping on subsequent fruiting bodies while I work in the garden.