Sintesi dei dati ecologici e distributivi sul genere Sterum Pers. in Sicilia

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Abstract

[automatically translated] The genus includes basidiomycetes Stereum lignicolous saprotrofi or parasites of hardwoods and conifers (1). The basidiomi grow on various wood substrates of different sizes such as fallen branches, trunks, stumps and roots emerging. The diversity of the genus Stereum Pers. Sicily is currently estimated at five taxa: Stereum gausapatum (Fr.) Fr., S. hirsutum (Willd.) Gray, S. rugosum (Pers.) Fr., St. sanguinolentum (Alb . & Schwein.) Fr. (2, 3, 4, 5) and S. subtomentosum Pouzar. The taxa belonging to the genus Stereum can be divided into two groups based on the color changes they dall'imenio because of cutting or rubbing: a) hymenium reddening (S. rugosum, S. and S. sanguinolentum gausapatum); b) hymenium not reddening (S. and S. hirsutum subtomentosum). A microscopic differential character is represented by the presence of acantocistidi (S. sanguinolentum, S. rugosum). In Sicily, the most frequent species and widely distributed throughout the territory is Stereum hirsutum, which can be observed both on the various types of wood in deciduous forests with Quercus sp. pl., Castanea sativa Miller and Fagus sylvatica L., both of coniferous wood (Pinus sp. pl., Cupressus sp. pl.) and Eucalyptus sp. pl. in artificial forest stands. S. hirsutum was also found in hazel is no longer cultivated on small fallen branches or old stumps. Interesting is also the discovery of Acacia saligna wood (Labill.) HLWendl., Introduced species and widespread in coastal areas of Sicily. S. gausapatum seems to prefer the oak woods with a preference for those Quercus ilex L., where fruits on small branches or stumps. S. rugosum can be observed on deciduous wood and in particular of F. sylvatica and Q. ilex with preferential substrate represented by stumps; and at the time was never found on coniferous wood, the substrate on which is instead present S. sanguinolentum. S. subtomentosum was found until today only about wood Quercus petraea (Mattuschka) Liebl., Within a mixed forest of Q. petraea, F. sylvatica and Ilex aquifolium L. within the Regional Park Madonie, in the province of Palermo. S. sanguinolentum grows exclusively on coniferous wood,
Original languageItalian
Pages252-252
Number of pages309
Publication statusPublished - 2009

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