Spongoides fissurata Q. Y. Zhang 2026, sp. nov.

Spongoides fissurata Q. Y. Zhang sp. nov. Figs 3, 4 Etymology. fissurata (Lat.): Refers to the cracking hymenial surface of the type specimens. Holotype. China • Fujian Province, Nanping, Laizhou Town, Lai Zhou Forestry Experiment Station, on living Chamaecyparis formosensis, leg. Q. Y. Zhang, 20 June 2025, QYZhang 190 (NJFC). Description. Basidiomata annual, resupinate, effused, closely adnate, inseparable from substrate, thick, spongy when fresh and dry, without odor or taste when fresh, up to 8 cm long, 4 cm wide, 0.5 cm thick, and with extremely thin layer. Hymenial surface smooth, with wrinkles or cracks, white to light gray when fresh and dry. margin thinning out or abrupt, adnate. Hyphal system monomitic; generative hyphae with clamp connections, thin-walled, colorless, occasionally branched, 2.5–4 μm in diameter, IKI –, CB –, tissues unchanged in KOH. Cystidia of two types: (1) tapering cystidia, thin-walled, 30–49 × 2–4 μm; (2) bottled cystidia, with a relatively long neck, smooth, thin-walled, 23–35 × 3–7 μm. Basidia clavate, with four sterig-mata and a basal clamp connection, colorless, thin-walled, 16–25 × 6–8 μm; basidioles in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, colorless, thin-walled, IKI –, CB –, (6.5 –) 7–10 (– 11) × 3–6.4 (– 7) μm, L = 8.16 μm, W = 4.05 μm, Q = 1.96–2.05 (n = 60 / 2). Additional specimen (paratype) examined. China • Fujian Province, Nanping, Laizhou Town, Lai Zhou Forestry Experiment Station, on living Chamaecyparis formosensis, leg. Q. Y. Zhang, 20 June 2025, QYZhang 194 (NJFC).