Summary:
Features include 1) a somewhat spherical fruitbody with a surface that is whitish with cinnamon-buff areas, 2) a thin, transparent peridium, 3) a spore mass that has a watery juice when fresh, 4) growth under conifers, 5) chemical characters, and 6) microscopic characters including smooth fusoid spores, and a subhymenium of giant cells 12-30 microns in diameter.

Chemical Reactions:
KOH on fresh peridium yellowish then reddish, (Smith(4)), KOH reddish on surface (Harrison)

Interior:
with a watery juice when fresh, as dried cinnamon-buff and sectioning readily (not hard), (Smith), "of round discrete-appearing locules (as seen on a section of dried basidiocarp), reminding one of a mass of individual tubes cut transversely, the tramal plate tissue very weak, with a watery juice when fresh, when dry firm but sectioning easily, as dried pallid to tinged cinnamon buff", (Harrison)

Microscopic:
spores 9-12 x 3.8-5 microns, groups of spores colorless in KOH, "subhymenium of inflated cells 12-30 microns wide", (Smith(4)), spores 9-12 x 3.8-5 microns, fusoid, smooth, yellowish to orange-buff in Melzer''s, colorless in KOH, walls thin (to 0.25 microns), no apical differentiation, some with a tendency to form a false septum; basidia not clearly seen, spores seen in groups of 4; cystidia none; subhymenium "a pseudoparenchymatous layer of giant cells 12-30 microns diameter", tramal plate proper of filaments 3-12 microns wide, the hyphae thin-walled and delicate; numerous globules present in mounts made in KOH and Melzer''s reagent; peridium "a layer of thin-walled hyphae or some with slightly thickened walls, compactly interwoven and with some hyphae of various diameters, reddish revived in KOH and with some reddish intercellular debris", in some sections an epicutis (?) of narrow hyphae 2-4 microns wide "with thin to thickened walls and these lemon yellow in KOH and a few seen with clamps"; "tramal body of more or less enlarged hyphae, cells thin-walled and smooth in KOH", (Harrison)

Notes:
The holotype was found in BC (Harrison).

Synonyms and Alternate Names:
Corticium contiguum P. Karst.
Corticium crustaceum (P. Karst.) P. Karst.