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Nomenclature

Lactarius atro-olivinus Verbeken & Walleyn
Persoonia 17: 394. 2001 ("2000").

Original diagnosis

Pileus 30-100 mm diam., infundibuliformis, distincto umbilico, margine undulato ad crenulato, pileipellis laevis, leviter glutinosa, ex olivaceo atrobrunnea. Stipes 30-60 mm longus, 10-16 mm crassus, subcylindratus, laevis, pruinosus, griseobrunnescens. Lamellae adnatae, moderate distantes ad distantes, atroflavidae. Contextus brunneogriseus, gustu mitis deinde acrissimus. Latex moderate abundans, albus tum cremeus, olivaceobrunnescens. Sporae globosae ad subglobosae, 8.7-9.3-9.8 x 7.7-8.5-9.2 µm, subreticulatae, alatae, cristis usque ad 2.5 µm altis ornatae, macula suprahilaris interdum distale amyloidea. basidia 50-65 x 12-15 µm, subclavata, tetraspora. Pleuromacrocystidia abundantia, 50-70 x 6-8 µm, fusiformia. Pleuropseudocystidia moderate abundantia, non emergentia, 3-4 µm diam. Pileipellis ixotrichoderma. Holotypus: Verbeken 99-143 (GENT).

Typification

Holotypus: A. Verbeken 99-143 (GENT)
Africa: Zimbabwe: Manicaland Prov., hill north of Penhalonga
miombo woodland

Description

Photographs

Microscopy

SEM photos