Agaricales » Agaricales genera incertae sedis » Leucoinocybe

Leucoinocybe lenta

Leucoinocybe lenta (Maire) Antonín, Borovička, Holec & Kolařík, in Antonín et al., Fungal Biology 123(6): 441 (2019)

Macroscopic descriptions: Maire (1928)

Basidiospores (5.5‒) 6.0 7.7 (‒ 8.0) × 4.0 5.2 (‒5.5) µm, average 7.0 × 4.7 µm, E = 1.331.67, Q = 1.471.48, (broadly) ellipsoid, sometimes with a slight suprahilar depression, thin-walled, smooth, amyloid. Basidia 2335 × 8.59.5 µm, 4-, rarely 2-spored, clavate, sometimes subcapitate, clamped. Basidioles 1238 × 310 µm, clavate, sometimes subcapitate, subcylindrical, subfusoid, clamped. Cheilocystidia scattered, 3160 × 919(‒22) µm, clavate, fusoid, sometimes subcapitate, sometimes irregular, thin-walled, clamped. Pleurocystidia absent. Trama hyphae cylindrical to subinflated, thinwalled, voluminous, non-dextrinoid, clamped, 530 µm wide. Pileipellis a cutis composed of ± cylindrical, thin-walled, nondextrinoid, clamped, 2e8 µm wide hyphae. Pileocystidia 32140 × 611 µm, subulate, fusoid, lageniform, rarely (sub)cylindrical, slightly to distinctly thick-walled (walls up to 1.5 µm thick), obtuse to subacute, rarely branched or irregular. Stipitipellis a cutis made up of cylindrical, parallel, ± thin-to slightly thickwalled, non-dextrinoid, clamped, 37 µm wide hyphae. Caulocystidia 50150 × 616 µm, subulate, lageniform, fusoid, thick-walled (walls up to 1 µm thick), sometimes with thin-walled base, subacute to obtuse, clamped; cylindrical or (narrowly) clavate, mostly irregular, thin-walled, 2.55.0 µm wide terminal cells also present.

Ecology and Distribution: On soil (twigs under the soil surface) and on wood of Q. ilex. It is widely distributed in the Mediterranean region in Europe and North Africa.

Index Fungorum number: IF825130

Notes: Leucoinocybe lenta is characterized by having rather small, amyloid basidiospores, only scattered, clavate, fusoid cheilocystidia, and subulate, fusoid, lageniform, rarely (sub)cylindrical, and slightly to distinctly thick-walled pileo- and caulocystidia.


Fig. 1. Phylogenetic placement of the studied fungi based on the concatenated nrITS and nrLSU sequences. The topology represents 50 % majority rule consensus tree from analysis in MrBayes. Bayesian PP 0.70 followed by Maximum likelihood BS 60 supports are indicated. Maximum likelihood tree was computed by IQ-TREE software. The Myxomphalia maura and Gamundia leucophylla were used as outgroups. Strongly supported branches (≤ 1.00/95) are doubled in width and the sequenced obtained during this study are printed in bold.

Figure 2. Leucoinocybe lenta (BOZ, epitype): (A) basidiospores; (B) cheilocystidia; (C) pileocystidia; (D) caulocystidia. Scale bar = 20 µm. Del. V. Antonín.


Antonín, V; Borovička, J; Holec, J; Piltaver, A; Kolařík, M. 2019. Taxonomic update of Clitocybula sensu lato with a new generic classification. Fungal Biology. 123(6):431-447

Maire, R., 1928. Diagnoses de champignons in edits de l'Afrique du Nord. Bulletin de la Société mycologique de France. 44: 37–56.




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project entitled:

"Macrofungi diversity research from the Lancang-Mekong Watershed and surrounding areas"

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