Trametopsis cervina
Trametopsis cervina (Schwein.) Tomšovský 2008, in Tomšovský, Czech Mycology 60(1), 1-11 (2008).
Diagnosis: Basidiocarps annual, sessile to effused-reflexed or rarely resupinate, usually in large imbricate clusters; sterile surface hirsute to strigose, pinkish buff to cinnamon or clay colour, usually azonate; pore surface concolorous with upper surface, darkening when dry; pores irregular, daedaloid to irpicoid, dissepiments becoming thin and lacerate; context fibrous, azonate, pale buff; tube layer concolorous with the context. Hyphal system dimitic; generative hyphae in context and trama thin-walled with clamps, hyaline, rarely branched, contextual generative hyphae often sclerified, thick-walled, forming short or rather long intercalary segments with clamps at their distal ends, 2–4 μm wide; skeletoid hyphae thick-walled, hyaline with partial branching, non-septate, usually lacking directional growth but curved, flexuous, often apparently connecting the hyphal strands, 2–4(–6) μm wide. True cystidia absent, fusoid cystidioles occasionally present. Basidia clavate, four-sterigmate, 20–25 × 5–7 μm; basidiospores cylindric, thin-walled, slightly curved, hyaline, negative in Melzer’s reagent, (5.5–)6–7–9(–10) × (1.7–)2–3 μm.
Index Fungorum Number: IF511830
Notes: Trametopsis cervina has a Holarctic distribution. The species is known from all over Europe (excluding the British Isles, Nordic countries, Italy and Greece), Africa, Asia and North America (Kotlaba 1984, Ryvarden and Gilbertson 1994, Bernicchia 2005).The fungus forms sporocarps on dead wood of numerous hardwood genera (17 genera according to Ryvarden and Gilbertson 1994), in Central Europe predominantly on Fagus. Jahn (1983) mentioned also records on conifers from Siberia. It causes white rot of dead wood.
Figure 1. Phylogenetic tree of Trametes cervina and related taxa based on sequences of the large subunit (LSU) of nuclear ribosomal DNA region. The unrooted tree was constructed with the Bayesian analysis. Bootstrap values from Maximum Parsimony and Bayesian posterior probabilities, respectively, are shown at the nodes. The bar indicates the number of substitutions per position.
Figure 2. Phylogenetic tree of Trametes cervina and related taxa based on sequences of the small subunit of mitochondrial ribosomal DNA region (mitSSU). The unrooted tree was constructed with the Bayesian analysis. Bootstrap values from Maximum Parsimony and Bayesian posterior probabilities, respectively, are shown at the nodes. The bar indicates the number of substitutions per position.
Figure 3. Microscopic characters of Trametopsis cervina. A – thin-walled generative hypha; B1, B2 – tramal generative hypha becoming thick-walled with occasional branching; C – contextual skeletoid hypha; D – basidium, E – basidiospores.
References:
Bernicchia A. (2005): Polyporaceae s.l. In: Fungi Europaei 10: 1–808, Alassio.
Ryvarden, L. & Gilbertson, R.L. (1994): European polypores, Part 2. In: Synopsis Fungorum 7, 394–743, Oslo.
Tomšovský, M. (2008). Molecular phylogeny and taxonomic position of Trametes cervina and description of a new genus Trametopsis. Czech Mycology 60(1), 1-11.
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