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Nomenclature

Lactifluus heimii (Verbeken) Verbeken
Mycotaxon 118: 450. 2011.

Lactarius heimii Verbeken
Bull. Jard. Bot. Natl. Belg. 65: 201. 1996.

Original diagnosis

Pileus 3-9 cm diam., convexus ad planoconvexus, depressus; margine primo involutissimo, deinde deflexo; velo generali tenui, arachnoideo, pruinoso ornatus; pileipellis laevis, griseo-aurantia vel brunneo-aurantia, marginem versus flavida. Stipes 2.5-3.5 cm longus, 0.8-1.5 cm crassus, cylindratus, velutinus, aurantio-albidus ad cremeus. Annulus arachnoideus, albidus, tenuis. Lamellae adnatae ad subdecurrentes, moderate distantes, 2-4 mm latae, flavido-albidae. Contextus albidus ad cremeus, gustu acris. Latex non abundans, albus vel translucido-albus; gustu mitis vel amarus, tum acris. Sporae albae in cumulo, ellipsoideae ad elongatae, 9.0-10.5-12.0 x 5.6-7.5-9.5 µm, incomplete vel subcomplete reticulatae, verrucis sublaevibus, usque ad 0.2 µm. altis, interdum connexis vel plus minusve in cristis brevibus confluentibus ornatae; macula suprahilaris non amyloidea. Basidia 45-55 x 10-12 µm, subclavata, tetraspora. Macropleurocystidia absentia. Pseudopleurocystidia moderate rara, 10-18 µm diam., emergentia usque ad 50 µm, cylindrata, obtusa. Pileipellis bistrata; elementa suprapellis (10)30-200 x 5-10 µm, curta et subclavata vel longa, cylindrata et trichoidea, septata, ramosa, pariete incrassatissimo (2-4 µm); subpellis ex hyphis intricatis et cellulis sphaericis. Holotypus: Verbeken 94.465 et icon. phot. (BR, isotypus GENT), Burundi, Bururi Prov., Nyamirambo, Rumonge Forest Reserve, 850-950 m. alt., miombo woodland dominated by Brachystegia utilis, iii 1994.

Typification

Holotypus: A. Verbeken 94.465 (BR)
Africa: Burundi: Rumonge Forest Reserve, Nyamirambo hill
miombo woodland

Description

Photographs

Microscopy

SEM photos