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| Helvella jocatoi F. Landeros, R. Garibay-Orijel & L. Guz.-Dáv. in Landeros, Ferrusca-Rico, Guzmán-Dávalos, ... et Garibay-Orijel, 2021. |
Abstract
Helvella lacunosa is a species complex, with Helvella lacunosa s.s. not currently distributed in America. The objective of this study was to resolve the taxonomy of specimens from central Mexico identified as Helvella lacunosa s.l. associated with Abies religiosa forests. The nuclear ITS and LSU regions were PCR-amplified and sequenced from dry herbaria specimens. Phylogenetic analyses were based on Parsimony, Maximum Likelihood and Bayesian Inference approaches. Sequences of Helvella from A. religiosa forests grouped into a well-supported lineage within the North American clade together with Helvella dryophila (associated with Quercus in western USA) and Helvella vespertina (associated with conifer forests in western USA). Therefore, we describe and illustrate Helvella jocatoi as a new species based on phylogeny and morphological traits. In central Mexico, this taxon is an edible mushroom known as “gachupín”, has high cultural importance and is sold in large quantities. The description of this new species restricted to A. religiosa forests has implications for its conservation since its habitat is endangered.
Keywords: Abies religiosa, Ecology, Helvella lacunosa complex, Phylogeny, edible mushrooms, Fungi
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| Helvella jocatoi F. Landeros, R. Garibay-Orijel & L. Guz.-Dáv. A) Holotype CB08326 (MEXU 25760); B) Castro-Castro 7 (IBUG); C) Landeros 3581 (IBUG); D) Hymenium; E) Ascospores; F) Ectal excipulum cells. A), B), C) Bars: 1 cm. D), E), F) Bars: 10 µm. |
Helvella jocatoi F. Landeros, R. Garibay-Orijel & L. Guz.-Dáv. sp. nov.
Diagnoses: Ascoma 40–160 mm high, pileus 20–60 mm, high 20–60 mm broad, with three lobes or irregularly
lobed, dark gray to black. Pileus sterile surface smooth to slightly venous, white or slightly grayish. Stipe up to 120
mm high and up to 25 mm broad, cylindrical, lacunose, first white, then grayish even blackish. Ascospores 16.8–20.8
(–22) × 10.8–13 (–14) µm, hyaline. Solitary or in clusters, terrestrial or on mosses in Abies religiosa forests on the
Trans Mexican Volcanic Belt.
Etymology: jocato (Spanish), is an acronym for the first two letters of the given name and two last names of José Castillo Tovar deceased at 2012 who was a prominent Mexican mycologist and teacher of the first author; i (Latin), pertaining to, indicates the genitive case in masculine form.
Fidel Landeros, Felipe M. Ferrusca-Rico, Laura Guzmán-Dávalos, Edgardo Ulises Esquivel-Naranjo, Noemí Matías-Ferrer, Cristina Burrola-Aguilar, Gala Artemisa Viurcos-Martínez and Roberto Garibay-Orijel. 2021. Helvella jocatoi sp. nov. (Pezizales, Ascomycota), A New Species from H. lacunosa Complex with Cultural Importance in central Mexico Abies religiosa Forests. Phytotaxa. 498(1); 1–11. DOI: 10.11646/phytotaxa.498.1.1
