syn.: Hypoxylon multiforme/crustaceum

Description:

Hypoxylon multiforme is characterized by pulvinate to widely effused-pulvinate coalescent stromata, with conspicuous perithecial mounds and conical papillate ostioles, growing on various hosts. In the field it can be confused with H. cohaerens and its variety microsporum, although they both are constricted at base and restricted to Fagus for the former and to Quercus and Castanea for the latter. Microscopically, H. multiforme differs from H. cohaerens in its faint, less than spore-length germ slit, while it is conspicuous and spore-length in H. cohaerens. It will be more easily distinguished from H. cohaerens var. microsporum which has smaller ascospores and vinaceous KOH-extractable pigments ( http://pyrenomycetes.free.fr/hypoxylon/h... )

Habitat:

location: North America, Europe edibility: Inedible fungus colour: Red or redish or pink, Brown, Black or blackish normal size: Less than 5cm cap type: Other stem type: Lateral, rudimentary or absent habitat: Grows on wood Hypoxylon multiforme (Fr.) Fr. Syn. Hypoxylon crustaceum (Sow.) Nitschke. An Ascomycete. The fruit body is a cushion like shape, rust-red then brown to black, some times single but it can fuse together to form larger groups up to 3cm or more across. Asci eight spored 80-90x6-7um. Spores bean-shaped flattened on one side 9-11x4.5-5um. Found normally on Birch branches or trunks, but also occasionally on other trees, uncommon , at any time of the year. ( http://www.rogersmushrooms.com/gallery/D... )

Notes:

The genus Annulohypoxylon was created in 2005 and contains species formerly placed in the closely related genus Hypoxylon (it is equivalent to Hypoxylon sect. Annulata sensu).( wikipedia ) -----( http://www.soortenbank.nl/soorten.php?so... ), ( http://www.google.nl/search?hl=nl&ps... ), ( http://www.mycobank.org/MycoTaxo.aspx?Li... ),