Nigroporus

The fruit bodies of Nigroporus fungi are annual to perennial. Their form ranges from pileate (with a cap) to crust-like. When a cap is present, it is scrupose (rough with very small hard points) to smooth, and sometimes with concentric zones. The colour is greyish-blue, vinaceous-brown to pink or violet. The pore surface has the same colours as the cap; pores are usually small and round to angular. The context is vinaceous brown to pink and purplish.

The hyphal system is dimitic, meaning it contains both generative and skeletal hyphae. The generative hyphae have clamp connections; the skeletal hyphae are brownish, and thick-walled to solid. There are no cystidia in the hymenium. The spores are mostly small, with their longest dimension typically less than 5 μm. They are smooth and thin-walled, hyaline (translucent), with an allantoid (long with rounded ends) to broadly ellipsoid shape.

• Nigroporus durus (Jungh.) Murrill (1907)
• Nigroporus macroporus Ryvarden & Iturr. (2004)
• Nigroporus scalaris (Fr.) Ryvarden (1972)
• Nigroporus stipitatus Douanla-Meli & Ryvarden (2007)
• Nigroporus ussuriensis (Bondartsev & Ljub.) Y.C.Dai & Niemelä (1995)
• Nigroporus vinosus (Berk.) Murrill (1905)

{{Reflist|colwidth=30em|refs=

{{cite journal |author1=Dai, Y.C. |author2=Niemelä, T. |year=1995 |title=Changbai wood-rotting fungi 4. Some species described by A.S. Bondartsev and L.V. Lyubarsky from the Russian Far East |journal=Annales Botanici Fennici |volume=32 |issue=4 |pages=211–226}}

{{cite journal |author=Donk, M.A. |year=1960 |title=The generic names proposed for Polyporaceae |journal=Persoonia |volume=1 |issue=2 |pages=173–302 |url=http://www.cybertruffle.org.uk/cyberliber/61056/0001/002/0173.htm}}

{{cite journal |author1=Douanla-Meli, Clovis |author2=Ryvarden, Leif |author3=Langer, Ewald |year=2007 |title=Studies of tropical African pore fungi (Basidiomycota, Aphyllophorales): three new species from Cameroon |journal=Nova Hedwigia |volume=84 |issue=3–4 |pages=409–420 |doi=10.1127/0029-5035/2007/0084-0409}}

{{cite journal |author1=Miettinen, Otto |author2=Larsson, Ellen |author3=Sjökvist, Elisabet |author4=Larsson, Karl-Henrik |year=2012 |title=Comprehensive taxon sampling reveals unaccounted diversity and morphological plasticity in a group of dimitic polypores (Polyporales, Basidiomycota) |journal=Cladistics |volume=28 |issue=3 |pages=251–270 |url=https://www.researchgate.net/publication/256859903 |doi=10.1111/j.1096-0031.2011.00380.x|pmid=34872189 |s2cid=84643554 }}

{{cite journal |author=Murrill, William A. |year=1905 |title=The Polyporaceae of North America: XI. A synopsis of the brown pileate species |journal=Bulletin of the Torrey Botanical Club |volume=32 |issue=7 |pages=353–371 |doi=10.2307/2478499|jstor=2478499 }}

{{cite journal |author=Murrill, William A. |year=1907 |title=Some Philippine Polyporaceae |journal=Bulletin of the Torrey Botanical Club |volume=34 |issue=9 |pages=465–481 |doi=10.2307/2479067|jstor=2479067 |url=https://www.biodiversitylibrary.org/part/246639 }}

{{cite journal |author=Ryvarden, L. |year=1972 |title=A critical checklist of the Polyporaceae in tropical East Africa |journal=Norwegian Journal of Botany |volume=19 |issue=3–4 |pages=229–238}}

{{cite book |vauthors=Ryvarden L, Johansen I |title=A preliminary polypore flora of East Africa |series=Synopsis Fungorum |year=1980 |page=446 |publisher=Fungiflora |location=Oslo, Norway}}

{{cite journal |author1=Ryvarden, Leif |author2=Iturriaga, Teresa |year=2003 |title=Studies in neotropical polypores 10. New polypores from Venezuela |journal=Mycologia |volume=95 |issue=6 |pages=1066–1077 |pmid=21149014 |doi=10.1080/15572536.2004.11833021 |jstor=3761913 |s2cid=42996705 }}

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Category:Polyporales genera

Category:Steccherinaceae

Category:Taxa named by William Alphonso Murrill

Category:Taxa described in 1905