Kumm., Führ. Pilzk. (Zwickau): 112 (1871), ≡ Hygrophorus psittacinus (Schaeff.: Fr.) Fr., Epicr. syst. mycol. (Upsaliae): 332 (1838), ≡ Agaricus psittacinus Schaeff. : Fr., Fung. Bavar. Palat. 4: 704: 70, t. 301 (1774). Pileus and stipe glutinous; DOPA based pigments absent, colors include blue, violet, pink, salmon, green, ochre yellow, yellow, brick red, gray-brown or mixtures of these, not bright red; lamellae narrowly or broadly attached, sinuate or decurrent, sometimes with a gelatinized

PF-562271 edge; odor absent or of burned rubber; basidiospores ellipsoid, ovoid or obovoid, rarely constricted, hyaline, thin-walled, inamyloid, not metachromatic; ixocheilocystidia present or absent; basidia mostly 4-sterigmate, these and/or basidioles often with toruloid clamp connections, about five times the length of the basidiospores; lamellar trama subregular, of short FG-4592 concentration elements < 140 μm long; subhymenium sometimes gelatinized; clamp connections present but sometimes rare in the trama; ixotrichoderm of the pileipellis with toruloid clamps. Phylogenetic

support Gliophorus appears as a monophyletic clade only in our 4-gene backbone ML analysis (18 % MLBS, Fig. 1). Similarly, Vizzini and Ercole (2012) [2011] analysis of ITS shows a monophyletic clade lacking MLBS and Bayesian support. Our ML Supermatrix, LSU, ITS-LSU, ITS and Bayesian 4-gene analyses all show Gliophorus as a grade that is basal or sister to Porpolomopsis and Humidicutis. Support for Gliophorus as sister to the Humidicutis – Porpolomopsis clade is weak, except in our 4-gene backbone ML analysis (97 % BS). Sections included Gliophorus, Glutinosae comb. nov. and Unguinosae. Comments Herink (1959) erected the genus Gliophorus for species of Hygrocybe

that had glutinous surfaces and usually bright Forskolin research buy pigments. The group was validly recombined as Hygrocybe subg. Gliophorus (Herink) Heinem. (1963). Bon (1990) noted the spectacular basal clamp connections on basidia in this group (termed toruloid by Young 2005) – a character shared with Humidicutis. Herink described sect. Insipidae in Gliophorus, but our molecular phylogenies placed the viscid yellow type species, H. insipida, in Hygrocybe subg. Pseudohygrocybe. The three remaining sections delineated by Herink (1959) are concordant with Gliophorus clades or grades in all of our phylogenetic analyses: Gliophorus (replaces G. sect. Psittacinae), Glutinosae (replaces G. sect. Laetae) and Unguinosae. In Hygrocybe subg. Gliophorus, we avoided making new combinaitions for sections as the topology of this group is unstable and may change with greater taxon sampling. Gliophorus sect. Glutinosae Kühner (1926) is valid, but would need a new combination as Hygrocybe sect. Gliophorus because Herink’s basionym (1959) has priority at section rank over sect. Psittacinae (Bataille) Arnolds ex Candusso (1997). Unranked names such as Bataille’s (1910) Psittacinae do not have a date for priority until they are validly combined at a designated rank (e.g.