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Nomenclature

Lactarius cretaceus Stubbe & Verbeken
Fungal Diversity 32: 129. 2008.

Original diagnosis

Lactarius cretaceus Stubbe & Verbeken sp. nov. (Figs 8-13; Fig. 84)
MycoBank: 512242

Etymology: cretaceus, meaning chalk-white, referring to the basidiocarp colour.
Pileus 30–35 mm diam., irregulare concavus, in centro depressus, margine distincte crenulato, siccus, velutinus, rugulosus, pallide cremeo-griseus. Stipes 35 mm longus, 4–6 mm crassus, cylindratus, siccus, leviter rugulosus, albidus. Lamellae late adnatae, distantes, latae, cremeae, rubescentes ad brunneo-rubescentes. Contextus albus, lente rubescens ad brunneo-rubescentem. Latex aquosus. Sporae 6.4–6.9–7.4 × 5.6–6.3–6.9 µm, Q = 1.05–1.1–1.23, subglobosae, zebroideae, cristis ornatae usque ad 2–2.5 (3) µm altis; macula suprahilaris distale amyloidea. Macrocystidia absentia. Cheiloleptocystidia absentia. Pileipellis bistrata, 80–120 µm crassa, elementa suprapellis 30–60 × 2–5 µm, subcylindracea. Stipitipellis trichodermia.
Typus: "Malaysia, state of Negeri Sembilan, Kampong Serting Ulu, Hutan Lipur Serting Ulu, on soil, along trail upwards into hillside forest, dominated by Dipterocarpaceae and Fagaceae, 13 September 2006, Stubbe 06-183 (GENT).

Typification

Holotypus: Stubbe 06-183 (GENT)
Asia: Malaysia: Negeri Sembilan, Kampong Serting Ulu, Hutan Lipur Serting Ulu
On soil, along trail upwards into hillside forest, dominated by Dipterocarpaceae and Fagaceae

Description

Photographs

Microscopy

SEM photos