Truncospora macrospora

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Truncospora macrospora
Scientific classification
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T. macrospora
Binomial name
Truncospora macrospora
B.K.Cui & C.L.Zhao (2013)

Truncospora macrospora is a species of poroid fungus in the family Polyporaceae. It was described as new to science in 2013 by Chinese mycologists Bao-Kai Cui and Chang-Lin Zhao. The fungus, found in southwest China, is distinguished by its annual growth habit, and the distinct dark brownish crust on its caps. The semicircular caps measure about 1.5–3 cm (0.6–1.2 in) long, 2.5–3.5 cm (1.0–1.4 in) wide, and 1–4 cm (0.4–1.6 in) thick. Microscopic characteristics include its relatively large spores (for which the fungus is named), measuring 16.5–19.5 by 8.0–9.5  μm, which have a strongly dextrinoid reaction. The type was collected in the Gaoligong Mountains (Baoshan, Yunnan) at an altitude of 2,400 metres (7,900 ft), where it was found growing on a fallen angiosperm branch. [1]

Polypore group of fungi

Polypores are a group of fungi that form fruiting bodies with pores or tubes on the underside. They are a morphological group of basidiomycetes like gilled mushrooms and hydnoid fungi, and not all polypores are closely related to each other. Polypores are also called bracket fungi, and their woody fruiting bodies are called conks.

Polyporaceae family of fungi

The Polyporaceae are a family of poroid fungi belonging to the Basidiomycota. The flesh of their fruit bodies varies from soft to very tough. Most members of this family have their hymenium in vertical pores on the underside of the caps, but some of them have gills or gill-like structures. Many species are brackets, but others have a definite stipe – for example, Polyporus badius.

A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species which have been described previously or are related. The species description often contains photographs or other illustrations of the type material and states in which museums it has been deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million species have been identified and described, out of some 8.7 million that may actually exist. Millions more have become extinct.

Molecular phylogenetic analysis demonstrated a close relationship of T. macrospora to Truncospora ochroleuca . This latter species is distinguished by its cream to ochre cap, and smaller spores that measure 14.0–17.0 by 7.0–9.5 μm. [1]

Ochre painting material and color

Ochre (English) or ocher is a natural clay earth pigment which is a mixture of ferric oxide and varying amounts of clay and sand. It ranges in colour from yellow to deep orange or brown. It is also the name of the colours produced by this pigment, especially a light brownish-yellow. A variant of ochre containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as "red ochre".

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References

  1. 1 2 Zhao, C.-L.; Cui, B.-K.; Dai, Y.-C. (2013). "Truncospora macrospora sp. nov. (Polyporales) from Southwest China based on morphological and molecular data". Phytotaxa. 87 (2): 30–38. doi:10.11646/phytotaxa.87.2.2.