Search on : Taxa descriptions

 


 
 Add this item to the list   827073 Original description
   
Description type:Original description 
Description:Basidiomata—Annual, resupinate, inseparable from substratum, soft corky, without odor or taste when fresh, fragile upon drying, up to 100 cm long, 40 cm wide and 3.5 mm thick at centre. Hymenophore with spines, spines cream when fresh and cinnamon when dry, up to 3 mm long and a few glued at tips when dry, margin distinct, white, rhizomorphic to cottony, up to 5 mm wide; spines soft corky to fragile, cream, becoming fragile and clay-buff when dry, up to 3 mm long, 2–3 per mm across base. Subiculum very thin, soft corky, white to cream, < 1 mm thick. Hyphal structure—Hyphal system monomitic; generative hyphae with clamp connections, IKI–, CB+; tissues unchanged in KOH. Subiculum—Generative hyphae hyaline, thin- to slightly thick-walled, frequently branched, flexuous, interwoven, 3–4.5 μm in diam. Gloeoplerous hyphae occasionally present, dark blue in Melzer’s reagent. Chlamydospores present, ellipsoid, thick-walled, 5–5.6 × 2.8–3.3 μm. Hymenophoral trama—Generative hyphae hyaline, thin-walled, frequently branched, straight, parallel along the spines, 2.8–4 μm in diam. Gloeocystidia frequent, hyaline, thin- to slightly thick-walled, clavate, contents oily and dark blue in Melzer’s reagent, rooting deep from the trama, up to a few hundreds μm long, the cystidia-like apical part 30–45 × 5–8 μm. Oily substance abundant among trama. Hymenium—Cystidia absent; cystidioles present, hyaline, thin-walled, bearing some irregular crystals, 30–45 × 5–8 μm; basidia broadly clavate with four sterigmata and a basal clamp connection, 20–26 × 3–4.5 μm; basidioles similar to basidia in shape, but smaller. Basidiospores ellipsoid, hyaline, thin-walled, densely echinulate, IKI+, CB+, (3.4–)3.5–4.5(–4.8) × 2.4–3.2(–3.5) μm, L = 3.99 μm, W = 2.92 μm, Q = 1.36–1.39 (n = 90/3). Additional specimens examined (paratypes) —AUSTRALIA. Tasmania: Aeve River, Streamside Reserve, on fallen trunk of Nothofagus, 15 May 2018, Dai 18768 (M, duplicates in BJFC); Mount Field Forest, on fallen trunk of Nothofagus, 14 May 2018, Dai 18737 (M, duplicates in BJFC). 
Taxon name: