Fungalpedia – Note 425, Tephroderma
Tephroderma Contu & Musumeci
Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Macrofungi.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Incertae sedis, Agaricales, Agaricomycetidae, Agaricomycetes, Agaricomycotina, Basidiomycota, Fungi.
Tephroderma was first introduced by Musumeci and Contu (2014), with T. fuscopallens as the type species, but the genus is still only a single species. Later, Sesli and Sesli (2016) confirmed this genus based on morphological, ecological, and molecular data (ITS). This genus is characterized by the cap of the basidiocarp, which is initially hemispherical or convex, flat as mature, and the center is more or less concave. It resembles a funnel, and its edges are irregular or wavy. Approximately one-third of the surface is striped, whereas the surface is smooth, hygroscopic, blackish brown or greyish ash-colored, and becomes darker when mature. The lamellar medium is extremely dense, flexible, thick, varying in length, highly decurrent, whitish-gray in young members, and grayish when mature; thick handle and hard, elastic, lighter in color than the hat, smooth surface, shiny, sometimes covered with whitish-gray small hyphae in the upper part, erased, sometimes flattened, curved, and at the base covered with white mycelium (Musumeci & Contu 2014). The cap content is elastic and grayish brown; its smell is not evident at first. It is unattractive when chewed or inedible. Basidiospores are transparent, inamyloid, ellipsoid or round-ellipsoidal, thin-walled, mostly attached to each other, and have a prominent apiculus and two to four spores basidia (mostly four spores), club-shaped, and basal hooks with hyphae hymenium are cylindrical, thick, and arranged regularly or irregularly; the cap surface is long and contains gray-brown pigments; the stem skin is composed of transparent, parallel, thick, and sometimes nodular hyphae (Contu & Musumeci 2014).
Type species: Tephroderma fuscopallens Musumeci & Contu
Other accepted species: This genus is monotypic.
Figure 1 – Tephroderma fuscopallens.a Basidia. b Basidiospores. c Stipepellis. d Pileipellis. Scale bars: a-d = 10 μm. Redrawn from Sesli and Sesli (2016).
References
Entry by
Priyashantha AKH, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)
Published online 2 December 2024