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 Add this item to the list   Laurilia Pouz.
Page number:787 
Remarks (internal):Differing from other Nordic resupinates with smooth hymenium in having a trimitic hyphal system, and therefore referred to the family Echinodontiaceae with which it has several characters in common. Gross (Mycopath. 24:1 p. 8, 1964) in a penetrating study of the family even places it in the genus Echinodontium, the generic type of which is a very characteristic hydnoid bracket fungus from NW. America. There are, however, some clear differences even if the shape of the hymenophore is neglected. The trama in Laurilia is dimorphic with a separating resinuous layer, visible as a dark line in section, while in Echinodontium the trama is uniform both in pileus and hymenial aculei. In Laurilia both the texture of the subicular trama and that of the subhymenium are trimitic, while in Echinodontium the trama is dimitic and the subhymenium mainly monomitic. The skeletal hyphae of Echinodontium are brick red, turning purple in KOH, while the skeletals in Laurila are brown in the tinder-layer, almost hyaline in the subiculum and subhymenium. We think that especially the differences in hyphal systems should be sifficient for maintainance of two genera.
The generic name is given in memory of the eminent Finnish mycologist Matti Laurila (1915-1942), who died early but contributed effectively to the knowledge of the resupinate fungi of N. Europe.
Description type:Non-original description 
Description:Laurilia Pouz.
Ceská mykol. 13 p. 14, 1959.
Fruitbodies perennial, leathery or ligneous, resupinate, effused and confluent, or partly pileate, especially on vertical sides of the substrate, upperside of young specimens consists of a brown tinder-like layer, in old specimens almost black and hard; trama consisting of two layers, the upper tinder and the true trama, which corresponds to a subiculum, the two layers being separated by a thin resinuous, hard layer, visible as a dark line in the sections; hymenium lightcoloured, more or less tuberculate, not hydnoid; texture dense and hard, lightcoloured; hyphal system trimitic with skeletals and binding hyphae with thick walls and few clamps, and thinwalled, fibulate generative hyphae; tinder-layer mainly dimitic, composed largely of horizontal, brown, thickwalled skeletal hyphae; subiculum trimitic of horizontal skeletal, lightcoloured hyphae, numerous binding hyphae and some generative hyphae; subhymenial part stratified, much thickening, trimitic, hard and tough as all parts of the fruitbody; metuloid cystidia numerous, thickwalled, encrusted; basidia clavate, with 4 sterigmata and basal clamp; spores globose, somewhat thickwalled, echinulate, amyloid.
Type species: Stereum sulcatum Burt.
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