Search on : Taxa descriptions

 


   
Literature:
 
Page number:693 
Remarks (public):The rough, subglobose, thickwalled spores, the numerous sulfocystidia and the marked smell make the species easily recognized. The nature of the spores makes it natural to give it a place in Hypochnicium but it deviates considerably in some respects, especially in the presence of sulfocystidia. The basidia are more or less stalked. The hyphae are more thinwalled and less distinct than in the other species of the genus. As can be seen from the scanning electron micrographs, the ornamentation of the spores is different from that of the other Hypochnicium species with rough spores. The warts seem to be continuous with the spore wall, while in H. punctulatum and its relatives, the warts are clearly discontinuous. Thus, it may be discussed whether Hypochnicium really is the proper genus for it, however, if rejected from this genus, the only alternative is to make a new monotypic genus.
The material from Aholmen, on Acer and Malus, is extraordinarily richly developed. In some parts of the material the majority of the spores are decidedly smaller, about 6 µm in diameter. In other parts, the spore size is intermediate (ab. 7 µm) or overlapping to the normal size for the species.
 
Description type:Non-original description 
Description:Hypochnicium analogum (Bourd. & Galz.) John Erikss., Symb. bot. Ups. 16:1 p. 101, 1958.- Gloeocystidium analogum Bourd. & Galz., Soc. Myc. Fr. Bull. 28 p. 366, 1913.
Fruitbody resupinate, effused, adnate, 0,2-0,5 mm thick, ceraceous when wet and alive, creamish to pale ochraceous; hymenium smooth or when vigourously growing more or less tuberculate, when dried often rimose; margin white, finely fibrillose in young specimens, determinate in old ones; when newly dried with a strong, pleasant, fruitish scent.
Hyphal system monomitic; hyphae thinwalled, 2-4 µm wide, fibulate, richly branched, densely united especially in the thickened subhymenium where they are vertically arranged between the gloeocystidia, in the subiculum easier to distinguish but still in a close texture; subicular layer reaching 100 µm in thickness with more or less horizontal hyphae, growing hyphal ends often seen among the basidia.
Cystidia (gloeocystidia, sulfocystidia) very numerous, standing vertically like a palissade, thinwalled, cylindrical or fusiform, obtuse or acute, protoplasm filled with oildrops of different sizes; positive reaction to sulfovanilline, turning the oil violet; oildrops visible also in cottonblue but dissolved in Melzer; some adventitious septa without clamps noticed; apices of gloeocystidia often projecting as far as mature basidia, in young specimens even longer.
Basidia at first narrowly clavate, then cylindrical, somewhat constricted in a suburniform way and often sinuous, basally tapering to a stalk-like hyphal part, 50-75 x 6-9 µm, protoplasm grainy and with some oil-drops of different sizes, normally with 4 sterigmata and with basal clamp.
Spores subglobose or broadly ellipsoid, usually uniguttulate, (6-)7,5-10 x (5-)7-8 µm, thickwalled, cyanophilous, non-amyloid, with prominent apiculus, surface with low rounded warts.
Habitat. On bark or wood of deciduous trees (e.g. Acer, Fagus, Fraxinus, Populus, Quercus and Ulmus) in fertile forests on rich soil.
Distribution. A very rare species in N. Europe. Though it is a large and conspicuous fungus, generally determinable already in the field, there are very few collections. In Sweden there are five collections. M.P. Christiansen reports it from Denmark. Not found in Norway. It is probably more common in C. Europe (found from France to Poland). We have seen several collections from S. and E. Soviet, communicated by A. Parmasto (Transcarpatia, Krasnodar, Primorsk), and some specimens from different parts of U.S.A and Canada, where it does not seem to be rare.
 
Taxon name: