Skeletocutis ipuletii Miettinen & A. Korhonen

Korhonen, Aku, Seelan, Jaya Seelan Sathiya & Miettinen, Otto, 2018, Cryptic species diversity in polypores: the Skeletocutisnivea species complex, MycoKeys 36, pp. 45-82 : 45

Skeletocutis ipuletii Miettinen & A. Korhonen sp. nov.

Holotype.

Uganda. Western Reg.: Kabarole Dist., Kibale National Park, indet. angiosperm wood (leaning dead branch), 28 Oct 2002 Ipulet F761 (H 7017127, isotype O 918074).

Description.

Basidiocarps annual; half-resupinate; up to 2.5 cm wide and 6 mm thick; hard when dry, breaking apart neatly; pilei fleshy, protruding up to 5 mm; margin blunt; upper surface almost smooth, matted, white to cream coloured when young, turning ochraceous brown; pore surface cream coloured with greyish tint deep within the tubes; context and subiculum whitish-cream to light greyish-brown; context up to 5 mm thick, faintly zonate in longitudinal section with thin dark lines separating layers of growth; tube layer up to 1.5 mm thick; pores 9 –10(– 11) per mm.

Hyphal structure: skeletal hyphae in context / subiculum 2.0 –3.0(– 3.6) µm wide, in trama (1.0 –)2.0–4.1(– 5.0) µm wide, generative hyphae in trama 1.0 –2.0(– 2.2) µm wide.

Basidiospores 2.8 –3.4×0.5–0.7(– 0.8) µm, L=2.96 µm, W=0.6 µm, Q’=(4.0–)4.1–6.0(– 6.2), Q=4.97, n=30.

Distribution and ecology.

The species is known only from the type specimen, collected from Kibale National Park in Uganda, where it was reportedly growing on a leaning, dead branch.

Etymology.

Named in honour of the pioneering Ugandan mycologist Perpetua Ipulet, who collected the type of this species.

Specimen examined.

UGANDA. Western Reg.: (holotype, see above).