Summary:
Features include minute, pinkish to salmon, lens-shaped fruitbodies growing stemless on dung, decaying vegetable matter, or soil, a delicate fringe on the margin, a blue reaction of the whole spore-bearing upper surface in iodine, and microscopic characters including very finely punctate spores that are 1-2-seriate and asci with walls that turn blue in iodine.

Microscopic:
spores 18.5-20 x 11-12 microns, elliptic, dotted with fine warts (oil immersion needed to see with certainty), colorless, without droplets, biseriate; asci 8-spored, 190-210 x 25-28 microns, turning blue in iodine: when treated with iodine, the whole spore-bearing surface turns blue within 10-30 minutes; paraphyses "slender, septate, tips thickened to 10 microns", (Breitenbach), spores 18-22(30) x 10-12(18) microns, elliptic, very finely punctate, 1-2-seriate; asci 8-spored, up to 225 x 30 microns, broadly clavate; paraphyses "stout, simple or forked, septate, up to 8 microns thick at the tip", (Dennis), spores 17-20 x 11-12 microns, or rarely 24-26 x 14-16 microns, elliptic, at first smooth, becoming very minutely warty, colorless, 2-seriate in upper part or becoming irregularly crowded; asci 8-spored, reaching a length of 200-300 microns and a width of 25-40 microns, rather broad-clavate, narrowing in lower part into stem-like base; paraphyses septate, stout, enlarged at tips, where they reach width of 7-8 microns, densely filled with orange granules; excipulum gives rise in upper part "to a palisade of mycelium the loose ends of which form a very delicate fringe-like border, the ends of the peridial mycelium reaching a diameter of 12-15 microns", (Seaver)

Notes:
Iodophanus carneus is found at least in WA, ID, CA, and CO, (Larsen), CO, FL, ND, NY, Bermuda, Puerto Rico, and Europe, (Seaver), the United Kingdom (Dennis), and Switzerland (Breitenbach). There is a collection from BC by R. Bandoni at the University of British Columbia (as Ascophanus).

Synonyms and Alternate Names:
Suillus imitatus A.H. Sm. & Trappe var. viridescens