Pteridium


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Related to Pteridium: Bracken fern
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pteridium

 

a genus of ferns of the family Pteridiaceae. They are herbaceous perennial plants with a creeping, branched root-stock. The solitary fronds are leathery, twice and thrice pinnate, and on long, thick stalks; they are often pubescent beneath. The sporangia are covered by the curled leaf margins.

There are two species of Pteridium. The common brake, or bracken (P. aquilinum), is distributed almost throughout the world, in coniferous and mixed forests. It forms a thick cover on felled trees and is encountered on mountains (Carpathians, Caucasus). P. tauricum, a liana with reddish pubescence on the underside, grows in the foothills and in the lower mountain zone of the Crimea and the Caucasus. The young leaves are sometimes used as food. The starch-rich rootstocks are eaten by livestock; they are poisonous to cattle and horses.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
arachnoideum on the seed bank in the Cerrado sites, because monospecific stands of Pteridium species in both temperate and tropical regions showed lower seed bank diversity (Pakeman and Hay, 1996; Mitchell et al., 1998; Silva and Silva Matos, 2006).
The occurrence of these acidophilous beech forests can be recognized in the pollen diagrams (Figures 3 and 4) by relatively high percentages of Betula (35% in sample 5), Abies (~1%), Castanea (1-3%), Carpinus betulus (1-2%), Fabaceae (6-9%) and Pteridium aquilinum (5-14%), although Fagus (6-20%) is the dominant pollen type in the dataset characterizing cluster 2 of the HCA (Figure 6).
Deteccao da ptaquilosida em diferentes estagios fenologicos da samambaia (Pteridium aquilinum) e analise de amostras de leite em fazendas com hematuria em Tolima, Colombia