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Nomenclature

Russula discopus R. Heim
Rev. Mycol. (Paris) 34: 346. 1970.

Original diagnosis

Pileo parvo, 10-20 mm lato, medio ± on magis minusve depresso, margine recta, alte ac longe sulcata, cum nonnulis transversis rugis cum venis anastomosantibus congruentibus, toto granulis farinosis caducisque operto, fundo glabro, e glauco pallide citrino, carne pelliculari. Stipite longo ac gracili, fusiformi, paulum sinuoso, inferne in discum subiculosum album angustato, pileo concolore, cavo-lacunoso. Lamellis distantibus, sine lamellulis, venis anastomosantibus transversis cunjunctis, adnexis, vivide citrinis. Carne crassa, concolore, dulcidula paene acrescente, odore liquaminis de malis. Sporis subglobosis, sed asymmetris, 8,2-10,5 (o.i) x 7,2-7,7 (o.e.) µ, reticulo amyloideo alto, variabili, denso, tuberculis elongatis saepe obliquis comitato, macula hilari frequenti, lata. Cystidiis hymenii longis ac proeminentibus, summis mucronatis vel papillatis. - Lignicola saprophyta, in ligno emortuo et foliis, in terra humosa, in silva prisca, Seredou, Guinée, april 1939, leg. R. Heim, typus M.N.H.N.P, nº D 38; Yom'biro, 26.IV.1939, nº H 10; Seredou, fin avril 1939, nº D 79.

Typification

Holotypus: Heim D 38 (PC)
Africa: Guinea: Seredou
Lignicole sur le sol de la forÍt

Description

Photographs

Microscopy

SEM photos