wesfree

Very kind indeed! Thank you for your considerable efforts. I shall endeavor to document the finds more carefully in future, having learned from this exchange. Perhaps more samples of the same fungi will still be available when I visit there again in July. In the meantime, I'll look online at additional images of the species you've mentioned, which should be quite useful. I'll revert here if new information becomes known. Cheers!

Thanks for your prompt reply. Unfortunately, I don't have direct spore surface images. However, the structure of the gills may be inferred from the spore print, and the color of the gills was tawny-light brown. The collected samples I removed essentially dissolved whilst I was "printing" them, and I'm unable to return to the site at present.

Exploring a forest (new to me) called Anne Springs Close Greenway in Fort Mill, SC (just south of Charlotte, NC). Encountered this (inter alia) along the way and managed to get a spore print too. Sizes were generally 2-4" diameter caps, with gills and brown spore. Mostly light brown cap, but mottled with white, and white stems. Stems were narrow, white, and hollow and appeared comparatively long in proportion to cap diameter. Growing on dead wood (pictured) alongside trails in old-growth hardwood forest near stream. Odor was "classic" 'shroom, but fairly mild. Ideas for an ID? Thanks!