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Nomenclature

Russula lateralipes Buyck & E. Horak
Mycologia [BPH] 91 (3): 533. 1999.

Original diagnosis

Russula lateralipes Buyck et E. Horak, sp. nov.

Pileus 30 mm diam, convexo-planus, conchatus vel auriculaeformis, fuscus vel niger, tomentoso-velutinus, siccus. Lamellae densae, adnato-adnexae, albidulae dein cremeae, tactu nigrescentes. Stipes 20–50 × 2–3 mm, cylindricus, eccentricus vel lateralis, curvatus, obscure griseo-brunneo, tomentosus. Odor saporque nulli. Caro alba. Latex aquosus. Sporae albae in cumulo, 7.3–7.98–9.0(9.4) × 6.7–7.20–8.1(8.4) µm (Q = 1.07–1.11–1.14), subglobosae vel ellipsoideae, verrucis obtusis interconnectis obtectae. Basidia 32–39 × 9–10 µm, 4-sporigera. Cystidia subcylindrica vel subfusiformia apice moniliformi vel subcapitato instructa. Pileipellis e cellulis catenulatis palisadam formantibus. Pileocystidia numerosa. Fibulae nullae. Ad terram et ad lignum putridum in silvis tropicalibus sub Castanopside acuminatissima (Fagaceae), Ayura, Kainantu, Nova Guinea, 27 May 1973.

Specimens examined. PAPUA NEW GUINEA: Eastern Highlands, E of Ayura, 27 May 1973, E. Horak ZT 73/279 (HOLOTYPE; CANB, PC ISOTYPES).

Typification

Holotypus: E. Horak 73-279 (ZT)
Oceania: Papua New Guinea: Ayura, Kainantu
Solitary in soil or on very rotten wood under Castanopsis acuminatissima (Fagaceae) in montane rain forest

Description

Photographs

Microscopy

SEM photos

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