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Nomenclature

Lactifluus rubroviolascens (R. Heim) Verbeken
Mycotaxon 120: 447. 2012.

Lactarius rubroviolascens R. Heim
Candollea 7: 377. 1938.

Original diagnosis

Pileo robustissimo, spisso, 6-8 cent. diam., convexo deformi, inaequali; margine ample reflexo, inaequabiliter lobato; cute crassa, tota tomentosa, sicca, nec zonata nec striata, satis separabilis, parvis maculis nigris conspersa. Stipite solido, circiter 4 cent. alto et 1,8-2 cent. lato, subtilissime toto lanuginoso, in apice aurantio, in medio pallidiore, deorsum brunneo-rufo-aurantio, ad basim albo et tomentoso, pleno. Lamellis paulum confertis, crassiusculis, latis, fragilibus, adnatis, 2-generibus lamellularum inaequalibus intermixtis, cremeis, nigricantibus, dein ex caeruleo violascentibus. Carne durissima, alba, sub cute stipitis aurantia, tarde nigrescente dein in pileo rubescente; in stipite immutabili, inodora, miti; lacte copioso, aquoso, subtranslucido, pallide ex griseo roseo, miti. Sporis in cumulo albis, 8,8-9,2 x 7,1-7,6 µ, reniformis obovatis, ad apicem late rotundatis, verrucis punctiformibus, distantibus, plurimis distinctus. Cystidiis plurimis, in acie atque lateribus praesentibus, usque ad 60 µ longis, fusoideis elongatis, tegumento crasso et refringenti, cum hyphis lactiferis nunquam continuis. Ad terram humosam, in silva arenosa littoris orientalis. Madagascar, G. 85, 9 décembre 1934.

Typification

Holotypus: Heim G85 (PC)
Africa: Madagascar: S of Soanierana, near Manompana

Published type studies: Heim, Prodr. Fl. Mycol. Madagascar 1: 46 (1938); Lalli & Pacioni, Mycotaxon 44: 186 (1992)

Description

Photographs

Microscopy

SEM photos