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On the genus Rosa (Rosaceae) in the Canary Islands: proposal of three new species

Authors: Vargas Gómez, Pablo; Luceño Garcés, Modesto;

On the genus Rosa (Rosaceae) in the Canary Islands: proposal of three new species

Abstract

[ES] El género Rosa ha sido estudiado someramente en las Islas Canarias, de tal manera que hay numerosos registros para diferentes islas desde principios del siglo XX, pero ninguna revisión taxonómica. Históricamente se han citado cinco táxones: Rosa tomentella Léman (también R. tomentella Bak.), R. canina L., R. rubiginosa L., R. micrantha Borrer ex Sm. y R. dumalis Bescht. subsp. teydensis Weller & H. Reichert. Esta nota pretende revisar la presencia de estos táxones y circunscribir las poblaciones canarias en especies. Sobre la base del tratamiento taxonómico actual adoptado para las rosas europeas en las últimas seis décadas, proponemos un mínimo de cinco especies de la sección Caninae para el archipiélago, de las cuales solo dos ya han sido citadas: R. micrantha y R. rubiginosa. Algunos caracteres clave encontrados en otras poblaciones distribuidas en Gran Canaria y La Gomera encajan en el concepto de R. nitidula Besser. Además, consideramos tres nuevas especies en los volcanes más altos y antiguos de las Islas Canarias: La Palma (R. roque-muchachensis, sp. nov.), El Teide (R. cannadas-teydensis, sp. nov.) y Gran Canaria (R. grancanariae, sp. nov.). Las tres muestran una combinación de caracteres que no se encuentran ni en Europa ni en el resto de las poblaciones de Canarias. En cualquier caso, los estudios filogenéticos ya en marcha arrojarán luz para proponer relaciones evolutivas y una clasificación más natural de Rosa en Canarias.

The genus Rosa has been cursory studied in the Canary Islands in such a way that there are multiple records for different islands since early 20th century, but no taxonomic review. Historically, five taxa have been cited: Rosa tomentella Léman (also R. tomentella Bak.), R. canina L., R. rubiginosa L., R. micrantha Borrer ex Sm. and Rosa dumalis Bescht. subsp. teydensis Weller & H. Reichert. This note intends to review the occurrence of those taxa and to circumscribe Canarian populations into species. Considering the current taxonomic treatment adopted for European roses in the last six decades, we propose a minimum of five different species of sect. Caninae for the archipelago, of which two have already been cited: R. micrantha and R. rubiginosa. Some key characters found in other populations distributed in Gran Canaria and La Gomera better fit into the concept of R. nitidula Besser. Additionally, we consider three new species on ancient high volcanoes of La Palma (R. roque-muchachensis, sp. nov.), El Teide (R. cannadas-teydensis, sp. nov.) and (R. gran-canariae, sp. nov.) showing a combination of characters found neither in Europe nor in the other populations of the Canary Islands. In any case, phylogenetic studies already in progress will shed light to propose evolutionary relationships and a more natural classification of Rosa in the Canary Islands.

We are most grateful to botanists who provided essential dog-rose materials: Félix Manuel Medina, Toño Lerín (La Palma), Ángel Fernández and Ramón Chinea “Sito” (La Gomera), Isa Nogales, C. Suarez & S. Cabrera (Gran Canaria), Cristina González Montelongo (TFC herbarium), Alfredo Reyes Betancort (ORT herbarium), Leopoldo Medina Domingo and Eva García Ibáñez (MA herbarium). In particular, we sincerely appreciate the persistent work of the plant artist Manuel Sánchez Villegas who performed the accurate scientific illustrations included in this paper. This research was supported by the project PIB 2022-13790 6NB-100, Ministerio de Ciencia, Innovación y Universidades.

Country
Spain
Keywords

new species, UNESCO:CIENCIAS DE LA VIDA, Angiosperms, Taxonomía, España, angiospermas, Canary Islands, Nuevas especies, Rosa, taxonomía, New species, Rosa, taxonomy, Spain, nuevas especies, Angiospermas, Canarias, Taxonomy

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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