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Issue: Vol. 641 No. 4: 21 Mar. 2024
Type: Article
Published: 2024-03-21
DOI: 10.11646/phytotaxa.641.4.5
Page range: 286-294
Abstract views: 46
PDF downloaded: 4

On the typification of three Isoetes names (Isoetaceae, Lycopodiopsida) described from France

Muséum national d’Histoire naturelle, Direction générale déléguée aux collections, Herbier national ; CP39, 57 rue Cuvier 75005 Paris, France
Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, École Pratique des Hautes Études, Université des Antilles ; CP39, 57 rue Cuvier 75005 Paris, France
Institut Agro, Université d’Angers, INRAE, IRHS, SFR QUASAV, 49000 Angers, France
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STeBiCeF), University of Palermo, via Archirafi 38, 90123, Palermo, Italy
European flora local extinctions lycophytes nomenclature taxonomy Bryophytes

Abstract

This paper deals with typification of three species names in Isoetes described from France: the lectotype previously designated for I. delalandei J.Lloyd is here superseded by another lectotype according to new evidence, and lectotypes are designated for I. echinospora Durieu and I. tenuissima Boreau. Selected specimens are preserved at ANG for I. delalandei, and at P for the two others. Scanning Electron Microscope (SEM) images of the spores, known to provide important routine characters in Isoetes, were acquired from the types, and information about the loci classici are provided. Isoetes echinospora and I. tenuissima have currently disappeared from their loci classici.

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