Comment: my sense of mock outrage of having to lump these two collections together.
Heck, the two spore measurements didn’t even overlap; 11.0-12.4 X 7.4-8.6 microns vs 15.0-16.1 X 10.0-11.0 microns.
By the way, I did find a description of sorts for Naucoria platysperma in Charles McIlvaine’s old One Thousand American Fungi, in which he claims “This species differs from N. pediades…by its larger broader spores and paler color.” the spores in his descr. are “broadly elliptical, 15 microns long, 12.5 microns broad.” That’s even wider than my measurements but I assume he was approximating from Peck’s description and probably from one collection. He notes that the collection was from Compton, California.
So I guess I have that option or maybe just go to Agrocybe sp.
As far as becoming an Agrocybe specialist, I have to quote John McEnroe; “You can’t be serious!”