Myxomycetes collection preserved in the herbarium of the Federal University of Roraima (Brazil)

Acta Amazonica

Laise De Holanda Cavalcanti²  Eneida Jucene Dos Santos Cavalcanti¹  David Itallo Barbosa²  Leandro De Almeida Neves Nepomuceno Agra²  Andrea Carla Caldas Bezerra²  Antônia Aurelice Aurélio Costa² 

[1] ,Universidade Federal de Pernambuco Departamento de Botânica Laboratório de MyxomycetesRecife Pernambuco ,Brasil

关键词: Brazilian Amazonia;    biodiversity;    biological collections;    Neotropics;    Amazônia brasileira;    biodiversidade;    coleções biológicas;    Neotrópicos;   

DOI  :  10.1590/S0044-59672014000100006

来源: SciELO

【 摘 要 】

First records of myxomycetes in the North region of Brazil go back to the 19th century. Nevertheless, the myxobiota of this region is still largely unexplored, with only 42 species recorded, distributed in 20 genera and seven families. The objectives of this paper were to characterize the Myxomycetes collection of the Herbarium of the Federal University of Roraima (UFRR) and to add new records for the myxobiota of this State. The collection holds specimens collected in fragments of Open Ombrophilous Forest, Seasonal Semi-deciduous Forest, Riparian Forest, deforested areas and urban home gardens in the state of Roraima. The 157 exsiccates were analyzed and identified or redetermined based on identification keys, descriptions and illustrations. The collection is in good conditions of preservation and includes all subclasses of Myxomycetes, 83% of its orders, 50% of its families, and 20 species. Trichiales, with one family, three genera and six species, represents 62% of all exsiccates. Cribraria aff. splendens, Metatrichia vesparia, Physarella oblonga, Stemonaria longa and Stemonitis splendens are new records for Roraima and Arcyria obvelata, Comatricha pulchella, Stemonitis pallida and Stemonitopsis aequalis are referred for the first time in the Northern Region, enlarging the knowledge of the Brazilian geographic distribution of these species.

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