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Nomenclature

Lactarius flavorosescens Stubbe & Verbeken
Fungal Diversity 32: 135. 2008.

Original diagnosis

Lactarius flavorosescens Stubbe & Verbeken sp. nov. (Figs 21-27; Figs 96-98)
MycoBank: 512245

Etymology: from flavus, meaning yellow, and rosescens, meaning pinkening, referring to the latex becoming yellow and then pink.
Pileus 40–110 mm diam., convexus ad concavum, in centro papillatus, margine crenulato, laevis ad rugulosum, atrobrunneus. Stipes 30–55 mm longus, 8–15 mm crassus, cylindratus, siccus, leviter velutinus, brunneus vel albidus. Lamellae late adnatae vel decurrentes, moderate densae ad moderate distantes, crassae, cremeae, lente rosescentes ad brunneo-rosescentes. Contextus albus, flavescens, tum pallide roseus. Latex copiosus, albus, primo flavescens, tum rosescens, gustu acris. Sporae 7–7.8–8.7 × 6.1–7–7.8 µm, Q = 1.07–1.13–1.29, subglobosae ad late globosas, zebroideae, cristis ornatae usque ad 2 (2.5) µm altis; macula suprahilaris non amyloidea vel distale amyloidea. Macrocystidia absentia. Cheiloleptocystidia 10–45 (55) × 2–10 µm, subcylindrata, subfusiformia. Pileipellis bistrata, 40–80 µm crassa, pigmento brunneo, elementa suprapellis 5–35 × 3–12, interdum pariete incrassato. Stipitipellis trichodermia.
Typus: "Malaysia, state of Negeri Sembilan, Pasoh Forest Reserve, near beginning of Nature Trail, N02°58.32´ E102°18.19´, 127 m alt., next to trail on soil, in secondary lowland rain forest dominated by Dipterocarpaceae, 19 September 2006, Stubbe 06-244 (GENT)".

Typification

Holotypus: Stubbe 06-244 (GENT)
Asia: Malaysia: Negeri Sembilan, Pasoh Forest Reserve, at beginning of Nature Trail
On soil, in secondary lowland rain forest dominated by Dipterocarpaceae, 127 m alt.

Description

Photographs

Microscopy

SEM photos