Agaricales » Agaricales genera incertae sedis » Cystoderma

Cystoderma amianthinum

Cystoderma amianthinum (Scop.) Fayod 1889, in Saar, Mycotaxon, 86, 458-460 (2003).

Basionym: Agaricus amianthinus Scop, Fl. carniol., Edn 2 (Wien) 2: 434 (1772)

Diagnosis: Pileus 15-50 mm, convex to piano-convex, buff, yellowish buff, cinnamon buff. saffron buff; usually with darker umbo; granulose, margin al first with remnants of veil; surface often rad ially wrinkled. Lamellae white, whitish or light cream when wet or old, adnate to adnexed , crowded. Stipe 25-60 x 2-7 mm; at apex whitish and silky striate; with evanescent floccose-scaly ring zone; below concolorous with or darker than pileus, covered with flocks, often glabrous with age. Context white to whitish, in stipe yellowish. Odour usually unpleasant. Basidiospores (4.0) 5.0-6.0 (-7.0) x (2.5-) 3.0-3.5 (-4.0) µm, Q =1.52-2.13, ellipsoid to oblong, amyloid. Basidia clavate, 4-spored, 18-27 x 4-6 µm. Cheilocystidia absent. Sphaerocysts darkening in KOH, cinnamon to rusty. Arthrospores in the upper part of pileus context below the sphaerocysts layer are lacking or thinly scattered.

Index Fungorum Number: IF121919

 

Reference:

Saar, I. (2003). The genera Cystoderma and Cystodermella (Tricholomataceae) in temperate eurasia. Mycotaxon, 86, 455-474.

 

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