Protoxerula

Protoxerula
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Agaricales
Family:	Physalacriaceae
Genus:	Protoxerula R.H.Petersen (2010)
Type species
Protoxerula flavo-olivacea R.H.Petersen (2010)
Synonyms
Xerula flavo-olivaceaR.H.Petersen & Halling (2008) [1] Oudemansiella flavo-olivaceaYang et al. (2009) [2]

Protoxerula is a fungal genus in the family Physalacriaceae. Described in 2010 by American mycologist Ron Petersen, the genus is monotypic, containing the sole species Protoxerula flavo-olivacea. This species was originally described as a Xerula in 2008 and transferred to Oudemansiella the following year before the new genus was circumscribed to accommodate it. P. flavo-olivacea is known from northeastern Australia, where it fruits singly to scattered in undisturbed rainforest, usually near plants from the genera Acacia , Agathis , and Corymbia . The variety kimberleyana, named for its type locality in the Kimberley region of Western Australia, has a greenish-cream cap colour, gills that become white and readily crumble when dry, long pseudorhiza (a cordlike structure resembling a plant root) with a hairy surface, ellipsoid basidiospores, thick-walled "hairs" (setae) on the cap surface, and a unique capitulate ("head-like") pleurocystidia. ^[3]

References

1. Petersen RH. (2008). The genus Xerula (Agaricales; Fungi) in Australia and New Zealand. Nova Hedwigia. Vol. 87. E. Schweizerbart'sche Verlagsbuchhandlung. pp. 1–67. doi:10.1127/0029-5035/2008/0087-0001.
2. Yang ZL, Zhang LF, Mueller GM, Kost GW, Rexer KH (2009). "A new systematic arrangement of the genus Oudemansiella s. str. (Physalacriaceae, Agaricales)" (PDF). Mycosystema. 28 (1): 1–13. Archived from the original (PDF) on 2014-02-26. Retrieved 2014-02-23.
3. Petersen RH, Hughes KW (2010). The Xerula/Oudemansiella Complex (Agaricales). Nova Hedwigia. Vol. 137. Stuttgart: J. Cramer. pp. 318–25. ISBN   978-3-443-51059-6.