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Citation for Study 25435

About Citation title: "Lactifluus pruinolamellatus and Lactifluus barbapapa (Russulaceae, Basidiomycota), two new species from Dicymbe forests of Guyana ".
About Study name: "Lactifluus pruinolamellatus and Lactifluus barbapapa (Russulaceae, Basidiomycota), two new species from Dicymbe forests of Guyana ".
About This study is part of submission 25435 (Status: Published).

Citation

Delgat L., Henkel T., Claerhout T., & Verbeken A. 2020. Lactifluus pruinolamellatus and Lactifluus barbapapa (Russulaceae, Basidiomycota), two new species from Dicymbe forests of Guyana. Cryptogamie Mycologie, .

Authors

  • Delgat L. (submitter)
  • Henkel T.
  • Claerhout T.
  • Verbeken A.

Abstract

Some tropical forests of the Guiana Shield are dominated by ectomycorrhizal (ECM) trees of the Fabaceae family, including members of the genus Dicymbe. These forests present regionally unique habitats for symbiotic ECM fungi, and one of the most species rich families present is Russulaceae. A long-term sampling program in forests in Guyana?s Pakaraima Mountains has revealed a number of species of Lactifluus, two of which are described here: Lactifluus pruinolamellatus sp. nov. and Lactifluus barbapapa sp. nov. Lactifluus pruinolamellatus is characterized by its orange basidiomata with strongly pruinose lamellae, mild taste, broadly ellipsoid spores with a low ornamentation forming an incomplete reticulum, scarce pleuromacrocystidia measuring 80 x 9 μm on average, and palisadic structure of the pileipellis. Lactifluus barbapapa is characterized by its pleurotoid habit, white to cream basidiomata which stain brown, subglobose to broadly ellipsoid spores with reticulate ornamentation up to 0.3 ?m high and a completely amyloid plage, the absence of pleuromacrocystidia, and the lampropalisadic structure of the pileipellis, with hair-shaped, irregularly clavate and irregularly globose terminal elements present.

Keywords

Neotropics, new taxa, phylogeny, Russulales, taxonomy

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  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S25435
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