Auriculariaceae
Exidiopsis

Exidiopsis effusa (Bref. ex Sacc.) Möller

First published in Bot. Mitt. Trop., 8: 168 (1895)
This species is accepted
This species is found in Europe, Colombia and North America.

Descriptions

Distribution
Colombian departments: Magdalena.
Ecology
Saprotroph. - Wood saprotroph. Host/Associated species: Pinus radiata; Corylus sp.; Fagus sp. Habitat/ecology: on fallen Corylus branch. on decorticated log of Pinus radiata. on dead attached Fagus branch, Fern worthy Forest. on fallen Fagus branches.
Morphology
Basidiomes extensively effused, thinly ceraceous to sub-gelatinous, entirely covered with an easily removed white pruina when damp (absent in wet weather); when this pruina is present, fruit bodies appear entirely white, sometimes with pink, violaceous, or greyish tints; without a pruina, fruitbodies appear gelatinous, hyaline, reddish pink, or violaceous blue-grey. On drying, fruit bodies form a very thin, white, red, or greyish-white crust. Hyphae clamped at all septa, rather thin, ca 1.5-2.5 µm wide, forming a branching, basidia-bearing hymenium in a gelatinous matrix. New hyphal branches normally arise from the bases of basidia. Hyphidia nodulose and weakly branched, ca 0.5-1.5 µm wide, forming a layer with or above the basidia at the hymenial surface, becoming gelatinized and difficult to differentiate in older specimens. Basidia normally 4-septate, ovoid to ellipsoid or pyriform, rather large, around 16.0 x 10.0 µm, clamped at the base, the clamp often forming an open loop in young basidia. Sterigmata tubular, sinuous, extending almost indefinitely to reach the hymenial surface. Spores depressed or weakly allantoid, ca 10.5-14.0(-15.0) x 3 5-4 5 µm.
[CFC]

Sources

  • Catalogue of Fungi of Colombia

    • © Copyright 2021 Useful Plants and Fungi of Colombia http://creativecommons.org/licenses/by/3.0
    • © Copyright 2021 Index Fungorum Partnership. http://creativecommons.org/licenses/by/3.0
    • http://creativecommons.org/licenses/by-nc-sa/3.0