Mycena tubarioides (Maire) Kühner

Encyclop. Mycol. 10: 256 (1938).

© A. Aronsen - Arendal, Seldalskogen/Sørsvann S, 2003.10.19.

Cespitose or in small groups on decayed leaf sheaths of Juncus, Typha, Carex and stems of Scirpus in wet places. Autumn. Rare in Norway and listed as NT in The Red List Of Threatened Fungi In Norway. See the records in The Norwegian Mycological Database.

Pileus 2-5(-8) mm across, hemispherical, parabolical, conical, broadly campanulate to almost plane with the margin irregularly elevated, ± depressed or with a small papilla, margin at first incurved, sulcate, translucent-striate, not hygrophanous, dry, pruinose or finely puberulous, glabrescent, pink to lilaceous pink, darker at the centre, with age brownish beige with no traces of pink. Lamellae 7-11 reaching the stem, very broad, arcuate to subhorizontal, the edge concave, broadly adnate to subdecurrent, pale pink to whitish; the edge slightly elastic, white-pruinose. Stipe 7-18 x 0.2-0.7 mm, cartilaginous, terete, equal or somewhat wider above (the base sometimes a little thickened), entirely pruinose, glabrescent for the greater part, pale pink or whitish with a pink shade; attached with a whorl of fairly few radiating, white fibrils. Flesh thin, concolorous with the pileus surface. Odour none.

Basidia 24-32 x 7-12 µm, clavate, 4-spored, with sterigmata 3-6 µm long. Spores (9-)9.8-14 x 4-5(-5.5) µm, Q = 2.3-3.1, Qav ≈ 2.8, elongated pip-shaped, smooth, amyloid. Cheilocystidia 13-30 x 5-13 µm, forming a sterile band, embedded in gelatinous matter and hard to detect, clavate, covered with rather few to fairly numerous , more or less evenly spaced, simple, occasionally branched, cylindrical excrescences 1.5-10 x 1-2 µm. Pleurocystidia absent. Lamellar trama dextrinoid, vinescent in Melzer’s reagent. Hyphae of the pileipellis 2.5-4 µm wide, embedded in gelatinous matter, smooth to densely diverticulate, with simple to branched excrescences 0.5-8 x 0.5-1 µm. Hyphae of the cortical layer of the stipe 3-4.5 µm wide, diverticulate, with simple to branched excrescences 1-6 x 1-2 µm, terminal cells 5-9 µm wide, clavate, diverticulate. Clamp connections present at all tissues.

Microphotos of cheilocystida

Mycena tubarioides occurs in the same habitats as similar-looking M. culmigena Maas Geest., M. juncicola (Fr.) Gillet, and M. riparia Maas Geest. It differs, however, from these species by the gelatinous layer covering the pileus and a gelatinous lamellar edge. Besides, M. riparia is clampless and has differently shaped cheilocystidia.



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© Arne Aronsen 2002-2016