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Rickenella

Scientific classification

Kingdom:	Fungi
Subkingdom:	Dikarya
Phylum:	Basidiomycota
Subphylum:	Agaricomycotina
Class:	Agaricomycetes
Order:	Hymenochaetales
Family:	Repetobasidiaceae
Genus:	Rickenella

A genus of brightly colored bryophilous agarics in the Hymenochaetales that have an omphalinoid morphology^[1]^[2]^[3]^[4][1] [2][3]. They inhabit mosses on mossy soils, peats, tree trunks and logs in temperate regions of both the Northern and Southern Hemispheres. Phylogenetically related agarics are in the genera Contumyces, Gyroflexus, Loreleia, Cantharellopsis and Blasiphalia, as well as the stipitate-stereoid genera Cyphellostereum and Cotylidia^[5] and the clavaroid genus, Alloclavaria^[4]. Rickenella is most similar to Contumyces and Blasiphalia, from the former differing by having its cystidia on the pileus, stipe, and hymenium solitary and scattered. The hair-like cystidia on the pileus and stipe give the small mushrooms a fuzzy appearance when viewed through a magnifying glass or hand lens^[6]^[7]. This helps to distinguish the genus from genera like Loreleia, which can be orange colored and inhabits similar sites, as well as other brightly pigmented omphalinoid genera. Rickenella does not produce massive clasping, hand-like appresoria on the rhizoids of its host, as does Blasiphalia. Instead, Rickenella produces a small appresorium or no appresoria and penetrates the rhizoids of its moss hosts, growing within the cells^[8]^[9]^[10]

Blasiphalia is a recent segregate of Rickenella.

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Etymology

Rickenella was named after the German mycologist, Adalbert Ricken, author of "Die Blätterpilze (Agaricaceae) (1915) Deutschlands und der angrenzenden Länder, besonders Oesterreichs und der Schweiz" [4]

References

^ Redhead, S.A. et al. (2002a). "Phylogeny of agarics: partial systematics solutions for bryophilous omphalinoid agarics outside of the Agaricales (euagarics)". Mycotaxon 82: 151-168.
^ Redhead, S.A. et al. (2002b). "Phylogeny of agarics: partial systematics solutions for core omphalinoid genera in the Agaricales (euagarics)". Mycotaxon 83: 19-57.
^ Larsson, K.-H. et al. (2004). "High phylogenetic diversity among corticioid homobasidiomycetes". Mycol. Res. 108: 983-1002.
^ ^a ^b Dentinger, B.T.M. & McLaughlin, D.J.' (2006). "Reconstructing the Clavariaceae using nuclear large subunit rDNA sequences and a new genus segregated from Clavaria". Mycologia 98 (5): 746-762.
^ Larsson, K.-H. et al. (2006 [2007]). "Hymenochaetales: a molecular phylogeny for the hymenochaetoid clade". Mycologia 98 (6): 926-936.
^ Norvell, L.L. et al. (1994). "Omphalina sensu lato in North America. 1-2: 1: Omphalina wynniae and the genus Chrysomphalina. 2: Omphalina sensu Bigelow". Mycotaxon 50: 379-407.
^ Kuyper, T.W. (1986). "Generic delimitation in European omphalinoid Tricholomataceae. La Famiglia delle Tricholomataceae. Atti del Convegno Internazionale de 10-15 settembre 1984". Atti del Centro Studi per la Fora Mediterranea 6: 83-104.
^ Redhead, S.A. (1981). "Parasitism of bryophytes by agarics". Canad. Jour. Bot. 59: 63-67.
^ Kost, G. (1986). "Morphology, anatomy and biology of species of the genus Rickenella. La Famiglia delle Tricholomataceae. Atti del Convegno Internazionale de 10-15 settembre 1984". Atti del Centro Studi per la Fora Mediterranea 6: 63-81.
^ Bresinsky, A. & Schötz, A. (2006). "Behaviour in cultures and habitat requirements of species within the genera Loreleia and Rickenella (Agaricales)". Acta Mycol. 41: 189-208.

Categories: Fungi | Basidiomycota

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Rickenella". A list of authors is available in Wikipedia.