Humidicutis multicolor

Humidicutis multicolor is a medium-sized, vividly coloured waxgill with a distinctive green to blue‑green to lilac‑green colour progression and a brilliant orange stipe base. Although this species has been described several times over the years, There is still some confusion over what it looks like, and lives up to it’s name.

Pileus: 25 to 45 mm; hemispherical to convex to umbonate-expanded. Colours: dark brown to green to olive‑green when young, becoming blue‑green or lilac‑green to lilicwith age. Surface dry, minutely fibrillose, silky, hygrophanous, and membranaceous; margin often splitting in maturity.
Lamellae: 12-18 (1-3 tiers), Bright yellow to yellow‑orange when young, later yellow‑green, olive‑green, or lilac‑tinged. Adnate to emarginate, sometimes subdecurrent with a short tooth; edges concolorous or orange.
Stipe: 25–75 × 2–5 mm, cylindrical, equal or slightly attenuated. Colour: pale green–blue–lilac at apex, brilliant orange at base. Dry, fibrillose, silky, hollow, fragile; solitary or caespitose.
Context: Blue in pileus, pale blue‑green in upper stipe, orange in stipe base; brittle.
Odour/tast: Not distinctive.

PDD 87860 Scale= 6 mm.

The yellow squiggly lines in the cap is likely insect larvae moving just under the cap surface leaveing meandering tunnels that show up as linear colour changes.

Insect larvae moving just under the cap surface can leave meandering tunnels that show up as linear colour changes or slightly sunken lines.

PDD 117483 Scale= 6.3 mm.

The gill colour is typical for this species, being yellow with a stipe that has an orange foot.

These below have yellow radial streaks in the cap which is not mentioned in any of the descriptions that I have seen.

PDD 102261 Scale= 9 mm.

Radial yellow streaks are common in Humidicutis: they form when pigments track along the cap’s natural radial fibrils or along tiny drying cracks in the cuticle. They’re a surface artefact, not a species‑level feature