Melanoleuca Dominicana Fungal Planet Description Sheets 365
364 Persoonia – Volume 45, 2020 Melanoleuca dominicana Fungal Planet description sheets 365 Fungal Planet 1161 – 19 December 2020 Melanoleuca dominicana Angelini, Para & Vizzini, sp. nov. Etymology. The name dominicana (Spanish) refers to the occurrence of Additional materials examined. DOMINICAN REPUBLIC, Puerto Plata, Sosua, the species in the Dominican Republic. one basidiome collected on litter of a heavily anthropized humid woodland of deciduous trees, a few km from the sea, 29 Nov. 2013, C. Angelini Classification — Incertae sedis in the Pluteineae, Agaricales, JBSD130781; ibid., 30 Nov. 2013, C. Angelini, JBSD130780, ITS sequence Agaricomycetes. GenBank MT991406. Pileus 4–5 cm diam, applanate, depressed with an umbili- Notes — The new species belongs in subg. Urticocystis. cate centre, rarely with a large and low umbo; pileus surface The two collections of Melanoleuca dominicana clustered in a smooth, opaque, always very dark in the centre, brownish, up strongly supported clade (MLB = 100) sister to M. jaliscoensis to blackish brown, otherwise ochre-brown, grey-brownish, also and M. longisterigma clade but without support. Melanoleuca ash-grey. Lamellae medium crowded, with numerous lamellulae dominicana is well differentiated from the other Melanoleuca (l = 1–3) of various lengths emarginated with long decurrent species described in literature, based on morphological and/or tooth, straight, white. Stipe 3.5–4 × 0.5–1 cm, central, cylin- molecular characteristics. Melanoleuca tucumanensis, M. tucu- drical, enlarged at the apex, clavate at the base, longitudinally manensis var. colorata and M. tucumanensis var. striata from fibrillose, from brown to dirty greyish brown, blackening at the Argentina (Singer & Digilio 1951, Raithelhuber 1974) have base. Context white brownish in the pileus, brown in the stipe, larger spores (7.5–10.3 × 6.2–7.5 µm, Singer & Digilio 1951; brown blackish in the stipe base.
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