Agaricales » Cystostereaceae » Parvodontia

Parvodontia luteocystidia

Parvodontia luteocystidia Hjortstam & Ryvarden 2004, in Hjortstam & Ryvarden, Synopsis Fungorum, 18, 28 (2004).

Diagnosis: Basidiome resupinate, adnate, fairly thin, hymenophore distinctly grandinioid, white or dull ochraceous, with more or less smooth aculei up to 0.5 mm long and about 4–6/mm.

Hyphal system monomitic; subiculum thin, basal hyphae hyaline, smooth, up to 3–4 μm wide, subhymenial hyphae likewise smooth, narrower, 2–2.5 μm wide, with clamp connections at all septa.

Cystidia negative in sulphovanilline, but apparently with contents cyanophilous, of two kinds, 1) abundant, embedded in the texture, rarely projecting above the basidia, obpyriform, thin-walled, in the upper part encrusted with yellowish, resinous matter, about 20 μm long and apically 7–8(–10) μm. 2) Cystidioles rare, sinuous, thin-walled, mainly projecting, 15–20 μm long.

Basidia sinuous, subpedunculate, thin-walled 15–17 x 4–4.5 μm, with four sterigmata and with a basal clamp connection.

Basidiospores narrowly ellipsoid, smooth, thin-walled, about 5 x 3 μm.

Substrate. On dead hardwood.

Index Fungorum Number: IF370981

 

Figure 1. Parvodontia luteocystidia A) section of hymenium, B) cystidia, C) basidiospores, from the holotype.

 

Reference:

Hjortstam, K., & Ryvarden, L. (2004). Some new and noteworthy corticioid fungi (Basidiomycotina, Aphyllophorales) from Japan. Synopsis Fungorum, 18, 28.

 

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