4.2 Article

A new and threatened species of Trichaptum (Basidiomycota, Hymenochaetales) from urban mangroves of Santa Catarina Island, Southern Brazil

Journal

PHYTOTAXA
Volume 482, Issue 2, Pages 197-207

Publisher

MAGNOLIA PRESS
DOI: 10.11646/phytotaxa.482.2.8

Keywords

Taxonomy; Polypores; Nigrofomitaceae; IUCN

Categories

Funding

  1. BrBol
  2. CNPq [421966/20165, PDJ 159946/2018-2, 311158/2018-8]
  3. FAPESC/CNPq [PRONEM 2020TR733]
  4. CNPq (PIBIC/UFSC)

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A new polypore species, Trichaptum fissile sp. nov., with large basidiomata, spores, and two types of cystidia, was discovered in mangrove forests near Santa Catarina Island in southern Brazil. The species is proposed as Vulnerable according to IUCN criteria. The taxonomic placement and delimitation of Trichaptum were also discussed in the study.
Trichaptum comprises around 36 polypore species, with variable morphology and worldwide distribution. During polypore surveys in Santa Catarina Island (Southern Brazil), specimens of a remarkable species, with large, mostly resupinate basidiomata, large (6-11 mu m long) spores and two kinds of cystidia, were collected in mangrove forests and their vicinities. Morphological and phylogenetic analysis (rDNA ITS) revealed it as new, and is described herein as T. fissile sp. nov. Moreover, the species is proposed as Vulnerable according to the IUCN criteria. The taxonomic placement and delimitation of Trichaptum are also discussed.

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