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Long sigmoid and twisted ascospores in the genus Harpidium: H. longisporum sp. nov., a synopsis of the genus and a key to the species

Published online by Cambridge University Press:  29 July 2022

Víctor J. Rico Open the ORCID record for Víctor J. Rico [Opens in a new window]
Víctor J. Rico*
Affiliation:
Departamento de Farmacología, Farmacognosia y Botánica (U.D. Botánica), Facultad de Farmacia, Universidad Complutense, Plaza de Ramón y Cajal s/n, 28040 Madrid, Spain
*
Author for correspondence: Víctor J. Rico. E-mail: rico@ucm.es
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Abstract

Harpidium longisporum is proposed as a new species. It is characterized by an areolate, mainly black thallus with trebouxioid algae, K+ blue-purple pigmented parts, pycnoascocarps forming aspicilioid apothecia, with moniliform paraphyses, unitunicate-rostrate, thick-walled asci and long sigmoid, lunate to falcate or irregularly curved and twisted ascospores, growing on steps of a vertical, intermittently moist, gneiss rock face. The genus Harpidium now comprises four species worldwide and, based on the selected specimens, a genus synopsis, a comparative table and a key to the species are included.

Keywords

Harpidiaceaelichensnew speciesSpaintaxonomy
Type
Standard Paper
Information
The Lichenologist , Volume 54 , Issue 3-4 , July 2022 , pp. 175 - 181
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of the British Lichen Society

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