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| Lactifluus bicapillus Lescroart & De Crop
in De Crop, Lescroart, Njouonkou, et al., 2019.
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Abstract
The milkcap genus Lactifluus is one of the most common ectomycorrhizal genera within Central African rainforests. During a field trip to the Dja Biosphere Reserve in Cameroon, a new Lactifluus species was found. Molecular and morphological analyses indicate that the species belongs to Lactifluus section Xerampelini and we formally describe it here as Lactifluus bicapillus sp. nov.
Keywords: Ectomycorrhizal fungi, Gilbertiodendron, Lactarius, phylogeny, taxonomy, tropical Africa, Uapaca
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| Figure 2. Basidiomata of Lactifluus bicapillus. a–c Basidiomata of Lactifluus bicapillus (EDC 12-176, EDC 12-174, holotype EDC 14-249 resp.) d Detail of lamellae (EDC 14-176), e) young specimen (EDC 12-169) f Detail of latex (EDC 12-169) g Detail of brown colour change of the latex (EDC 14-238)
(photographs a–f by E. De Crop, g by A. Verbeken).
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| Figure 3. Microscopic features of Lactifluus bicapillus a Basidiocarps (from EDC 12-071, EDC 12-169, EDC 12-174, EDC 12-176, and EDC 14-249) b Basidia (from EDC 12-071, and EDC 14-249) c Sterile elements from the hymenium (from EDC 12-169) d Pleuropseudocystidia (from EDC 12-169) e Basidiospores (from EDC 14-249).
Illustrations by E. De Crop, J. Lescroart and A. Verbeken. Scale bar: 10 μm.
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Lactifluus bicapillus Lescroart & De Crop
Diagnosis: Lactifluus bicapillus differs from L. xerampelinus by its yellowish-orange to dark red cap, fertile lamella edge, a lampropalisade with two types of terminal elements as pileipellis type, and a distribution in the Guineo-Congolian rainforest.
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Distribution: Known from Cameroon and Gabon.
Ecology: Guineo-Congolian rainforest, scattered on forest floor under Gilbertiodendron dewevrei, Uapaca guineensis, U. acuminata, and U. paludosa.
Etymology: A combination of ‘bi’ and ‘capillus’, referring to the two types of terminal elements in the pileipellis and stipitipellis.
Eske De Crop, Jonas Lescroart, André-Ledoux Njouonkou, Ruben De Lange, Kobeke Van de Putte and Annemieke Verbeken. 2019. Lactifluus bicapillus (Russulales, Russulaceae), A New Species from the Guineo-Congolian Rainforest. MycoKeys. 45: 25-39. DOI: 10.3897/mycokeys.45.29964
