Research portal

Dutch

Actinella guianensis Grunow (Eunotiaceae): analysis of the type material and the 2 description of Actinella cordiformis sp. nov.

Research output: Contribution to journalA1: Web of Science-articlepeer-review

  • Angela Maria da Silva-Lehmkuhl
  • João Marcos Souza Coêlho
  • J. Patrick Kociolek
  • Elton Augusto Lehmkuhl
  • Bart Van de Vijver
  • Tanja M. Schuster
  • Thelma Veiga Ludwig
The taxonomic concept of Actinella guianensis Grunow is well-established in the literature. However, during the analysis of recent samples from two Amazon blackwater habitats, we found an uncommon and oddly shaped Actinella taxon, which corresponds to what is reported in Grunow's drawings in Van Heurck's Atlas as the type species of A. guianensis. To understand the identity of the uncommonly shaped Actinella, we revisited the type materials and the literature citing A. guianensis and compared them with the population found in samples recently collected. Two distinct morphologies were found in the original material. These morphologies differed mainly in the shape of the headpoles, with one being cordiform (heart-shaped) and the other bulbous. Furthermore, differences were observed in the shape of the footpoles, with one being characterized by enlarged and cuneated to protracted apices, while the other presents a spoon-like shape. Following the analysis of the original material, modern samples, and the literature, we propose Actinella cordiformis Coêlho, Silva-Lehmkuhl, Kociolek, Lehmkuhl et Ludwig sp. nov. for the species having a cordiform headpole.
Original languageEnglish
JournalFottea
Volume24
Issue number1
Pages (from-to)118-135
Number of pages18
ISSN1802-5439
DOIs
Publication statusPublished - 2024

Documents

DOI

Log in to Pure