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Nomenclature

Lactifluus urens (Verbeken) Verbeken
Mycotaxon 118: 452. 2011.

Lactarius urens Verbeken
Bull. Jard. Bot. Natl. Belg. 65: 211. 1996.

Original diagnosis

Pileus 4-12 cm diam., convexus ad planoconvexus, in centro depressus ad infundibuliformis; margine involuto ad incurvo, tum undulato et irregulariter crenulato, striato; pileipellis leviter velutina, squamulosa, tum laevis, in centro brunneo-aurantiaca ad pallide brunnea, marginem versus pallidior, griseo-aurantiaca, flava ad cremea. Stipes 2-5.5 cm. longus, 0.8-2.5 cm crassus, curte cylindratus, basin versus attenuatus, leviter velutinus ad laevis, brunneo-aurantiacus, tum griseo-aurantiacus. Lamellae adnatae ad decurrentes, moderate distantes, (3)5-10(13) mm latae, cremeae ad flavidae. Contextus albus, tum cremeis, gustu mitis ad acris. Latex abundans, albus, gustu acrissimus. Sporae albae in cumulo, ellipsoideae, 8.5-9.4-10.2 x 7.0-7.8-8.5 µm, verrucis laevibus, regularis, convexis, usque ad 0.5 µm altis, inter sese conjunctis in reticulo subcompleto ornatae; macula suprahilaris non amyloidea. Basidia 55-70 x 10-12 µm, subclavata, tetraspora. Macropleurocystidia abundantia, emergentia, 65-130 x 8-10 µm, cylindrata ad fusiformia, obtusa ad mucronata. Pseudopleurocystidia abundantia, 7-10 µm diam., cylindrata ad fusiformia, obtusa. Pileipellis ex hyphis intricatis ad ascendentibus, hyalinis, ramosis, pariete tenui ad leviter incrassato; elementa terminalis 20-80 x 5-8 µm, cylindrata ad tortuosa, obtusa, flavidobrunnea. Holotypus: Rammeloo 6002 (BR), Burundi, Burundi Prov., miombo woodland, Mugara, xii 1978.

Typification

Holotypus: Rammeloo 6002 (BR)
Africa: Burundi: Mugara
miombo woodland

Published type studies: Verbeken et al., Syst. Geogr. Plants 70: 209 (2000)

Description

Photographs

Microscopy

SEM photos