| Physalacriaceae | |
|---|---|
| | |
| Oudemansiella australis | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Physalacriaceae Corner (1970) |
| Type genus | |
| Physalacria Peck (1882) | |
The Physalacriaceae are a family of fungi in the order Agaricales. Species in the family have a widespread distribution, ranging from the Arctic, ( Rhizomarasmius ), to the tropics, e.g. Gloiocephala , and from marine sites ( Mycaureola ) and fresh waters ( Gloiocephala ) to semiarid forests ( Xerula ).
Most species in the Physalacriaceae form fruit bodies with caps and stipes. They have a monomitic hyphal system (wherein only generative hypha are produced), and clamp connections are present in the hyphae. Basidia (spore-bearing cells) are club-shaped with two to four sterigmata. The basidiospores generally have ellipsoidal, spindle-like (fusiform), cylindrical, or tear-drop (lacrimiform) shapes; they are thin-walled, hyaline, and do not react with Melzer's reagent. [1] The family also contains corticioid fungi (in genus Cylindrobasidium ) and a secotioid species ( Guyanagaster necrorhiza ). [2]
The family was originally defined by English mycologist E.J.H. Corner in 1970 [3] and revised in 1985 by Jacques Berthier [4] but neither author anticipated the application to a molecularly defined group of agarics first identified by Moncalvo and others in 2002. [5] Molecular studies placed Physalacria , formerly the sole genus in this family, together with the agaric genera Flammulina , Xerula and Armillaria . Due to the precedence rules based on date of publication, the family name "Physalacriaceae" became applicable for all these fungi, making the former family "Xerulaceae" obsolete. [5] [6] [7] [8]