Publication: Hymenostylium chapadense M.J.Cano & J.A.Jiménez (Pottiaceae), a new species from Brazil and its phylogenetic position based on molecular data
Authors
Martínez, Mónica ; Cano Bernabé, María Jesús ; Guerra Montes, Juan ; Jiménez Fernández, Juan Antonio
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Publisher
Taylor and Francis Group
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DOI
https://doi.org/10.1080/03736687.2022.2041799
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info:eu-repo/semantics/article
Description
© British Bryological Society 2022. This document is the Published version of a Published Work that appeared in final form in Journal of Bryology. To access the final edited and published work see https://doi.org/10.1080/03736687.2022.2041799
Abstract
In the context of a taxonomic revision of the tribe Pleuroweisieae in South
America, we studied a specimen of Hymenostylium that did not match any previously known
species of this genus in America. Here we present our arguments for recognising this moss
as a new species.The morphology of the potential new species was compared with that of the species
of Hymenostylium presently recognised. A phylogenetic analysis based on the nuclear ITS and
plastid rps4 regions was performed to investigate relationships between the new species and
closely related taxa. Based on morphological and molecular data, we describe this
new species from Brazil, Hymenostylium chapadense M.J.Cano & J.A.Jiménez. The species is
strikingly distinguished by a stem with central strand and hyalodermis, oblong-ligulate to
oblong-elliptical leaves that are when dry slightly crisped in the upper part and usually
constricted just above the base and recurved on one side in the lower third, with uni- to
bistratose margins, obtuse apex, costa wide and ending below the apex or percurrent with
ventral and dorsal surface cells of the costa differentiated as an epidermis, and middle
laminal cells usually with a simple, coarse, central papilla. Our molecular study placed
H. chapadense as sister to H. hildebrandtii (Müll.Hal.) R.H.Zander. Possible confusion with the
latter species and other closely related taxa is discussed. A key to the South American
species of Hymenostylium is provided.
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Citation
Journal of Bryology, 2022, Vol. 44, N. 1, pp. 51–61
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