TL;DR: Molecular phylogenies using 1–4 gene regions and information on ecology, morphology and pigment chemistry were used in a partial revision of the agaric family Hygro- phoraceae, retaining in the Hygrophoraceae the basal cuphophylloid grade comprising the genera Cuphophylla, Ampulloclitocybe and Cantharocybe, despite weak phylogenetic support.
Abstract: Molecular phylogenies using 1–4 gene regions and information on ecology, morphology and pigment chemistry were used in a partial revision of the agaric family Hygro- phoraceae. The phylogenetically supported genera we recognize here in the Hygrophoraceae based on these and previous analyses are: Acantholichen, Ampulloclitocybe, Arrhenia, Cantharellula, Cantharocybe, Chromosera, Chrysomphalina, Cora, Corella, Cuphophyllus, Cyphellostereum, Dictyonema, Eonema, Gliophorus, Haasiella, Humidicutis, Hygroaster, Hygrocybe, Hygrophorus, Lichenomphalia, Neohygrocybe, Porpolomopsis and Pseudoarmillariella. A new genus that is sister to Chromosera is described as Gloioxanthomyces. Revisions were made at the ranks of subfamily, tribe, genus, subgenus, section and subsection. We present three new subfamilies, eight tribes (five new), eight subgenera (one new, one new combination and one stat. nov.), 26 sections (five new and three new combinations and two stat. nov.) and 14 subsections (two new, two stat. nov.). Species of Chromosera, Gliophorus, Humidicutis, and Neohygrocybe are often treated within the genus Hygrocybe; we therefore provide valid names in both classification systems. We used a minimalist approach in transferring genera and creating new names and combinations. Consequently, we retain in the Hygrophoraceae the basal cuphophylloid grade comprising the genera Cuphophyllus, Ampulloclitocybe and Cantharocybe, despite weak phylogenetic support. We include Aeruginospora and Semiomphalina in Hygrophoraceae based on morphology though molecular data are lacking. The lower hygrophoroid clade is basal to Hygrophoraceae s.s., comprising the genera Aphroditeola, Macrotyphula, Phyllotopsis, Pleurocybella, Sarcomyxa, Tricholomopsis and Typhula.
TL;DR: In an investigation to understand the agaric diversity of Western Ghats of Kerala, a remarkable Hygroaster species was encountered and on detailed examination and comparison was found to be distinct from all previously known species and hence described here as new.
Abstract: Introduction Hygroaster Singer is a small genus of the family Hygrophoraceae comprising seven species that are differentiated mainly on the basis of basidiospore morphology and presence or absence of clamp connections. In an investigation to understand the agaric diversity of Western Ghats of Kerala, a remarkable Hygroaster species was encountered. On detailed examination and comparison, it was found to be distinct from all previously known species and hence described here as new.
TL;DR: It is revealed that H. fucatus belongs to the genus Asproinocybe in suborder Tricholomatineae, whose representatives also have nodulose basidiospores, and a new combination A.fucata is proposed.
Abstract: The genus Hygroaster (Hygrophoraceae, Hygrophorineae) is a small genus with a tropical distribution. Based on morphological and phylogenetic analysis, two new species, H. madagascarensis and H. andasibensis, are described from Madagascar. They are the first species of this genus described from Africa. To stabilize the nomenclature, the type specimens of H. nodulisporus, the type species of the genus, and H. fucatus were studied. The initial combination of the name Hygrophorus nodulisporus in the genus Hygroaster was invalid and is thus validated here. In addition, our study revealed that H. fucatus belongs to the genus Asproinocybe in suborder Tricholomatineae, whose representatives also have nodulose basidiospores. A new combination A. fucata is proposed.