Agaricales » Agaricales genera incertae sedis

Gloioxanthomyces

Gloioxanthomyces Lodge, Vizzini, Ercole & Boertm., in Lodge et al., Fungal Diversity 64(1): 49 (2013)

Etymology: Gloio — glutinous, xantho —yellow, myces — fungus.

Diagnosis: Pileus and stipe yellow or orangish yellow, viscid; lamellae arcuate-decurrent, yellow, with a gelatinized or subgelatinized edge, edged often darker (translucent). Basidiospores ellipsoid or subglobose, Q 1.0—1.6, mean Q 1.2—1.3, guttulate in KOH, with a wide hilar appendix, inamyloid, acyanophilic, hyaline, smooth; basidia usually 4-sterigmate, with basal clamp connection occasionally a moderate medallion type, short, 30—40 μm long, ratio of basidia to basidiospore length 4–5; pileipellis and stipitipellis an ixotrichodermium or ixocutis; trama not dextrinoid; lamellar trama subregular, central strand not differentiated, elements cylindric to subglobose, some subglobose cells highly inflated to 10—30 μm diam., subhymenium of tightly interwoven small diameter hyphae, not gelatinized except at the lamellar edge; edge gelatinized or subgelatinized; cheilocystidia clavate, simple or slightly lobed. Clamp connections present throughout, occasionally a modest medallion type, not toruloid. It differs from Chromosera subg. Oreocybe in presence of a gelatinized lamellar edge and cheilocystidia, and basidiospores with smaller Q (1.2–1.3 vs. 1.4–1.8) and never constricted. It differs from Chromosera subg. Chromosera in absence of dextrinoid reactions in the context, absence of pigment globules in the pileipellis and lamellar edge gelatinized with cheilocystidia present. It differs from Chromosera subg. Subomphalia in absence of violaceous pigments, viscid rather than dry surfaces, and absence of a central strand in the lamellar trama.

Index Fungorum number: IF804073

Type species: Gloioxanthomyces vitellinus (Fr.) Lodge, Vizzini, Ercole & Boertm., in Lodge et al., Fungal Diversity 64(1): 50 (2013)

 

Species

Gloioxanthomyces nitidus (Berk. & M.A. Curtis) Lodge, Vizzini, Ercole & Boertm. 2013

Gloioxanthomyces vitellinus (Fr.) Lodge, Vizzini, Ercole & Boertm. 2013

 

Reference:

Lodge, D.J.; Padamsee, M.; Matheny, P.B., Aime, M.C.; Cantrell, S.A.; Boertmann, D.; Kovalenko, A.; Moncalvo, J.-M.; Vilgalys, R.; Vizzini, A.; Larsson, E.; Lücking, R.; Griffith, G.; Smith, M.; Norvell, L.; Desjardin, D.E.; Redhead, S.; Ovrebo, C.L.; Lickey, E.B.; Ercole, E.; Hughes, K.W.; Courtecuisse, Young, A.; Binder, M.; Minnis, A.; Lindner, D.L.; Ortiz-Santana, B.; Haight, J.;Læssøe, T.; Baroni, T.J., Geml, J., Hattori, T.R. 2013. Molecular phylogeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales). Fungal diversity. 64:1-99

 

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