Abstract

MAYER-GOYENECHEA, I. Goyenechea; ANAYA CISNEROS, V.Y.; CASTILLO-CERON, J.M.  and  MONTIEL-CANALES, Gustavo. Track analysis of the pteridoflora of Hidalgo, Mexico. Polibotánica [online]. 2023, n.55, pp.1-14.  Epub May 26, 2023. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.55.1.

The distribution patterns of 48 species of ferns from the State of Hidalgo (Mexico) were established using a parsimony analysis of endemism (PAE) to identify generalized tracks of their pteridofloras, the basic data matrix was built using bibliographic citations. Two biogeographical units (UGOs) were considered: the four biogeographic provinces into which the territory is divided, and nine localities considered relevant for the Hidalgo ferns. A matrix of 48 individual tracks was built for each system of UGOs. Two generalized tracks were obtained with the first system that can be visualized as one, nested within the other. With the second system, three generalized tracks were obtained and can be visualized as one, two nested within the largest one. The first generalized track is supported by six synapomorphies and the second by three. These tracks indicate that the Sierra Madre Oriental (SMO) is more related to the Veracruzana Province (PV), and these two in turn with the southern part of the Chihuahuan Desert (DS). The second generalized track shows that the locality of Tenango de Doria and the Otomí Tepehua zone are closely related, both being located within the PV and SMO biogeographical provinces, respectively. It is concluded that the PV and SMO provinces, in addition to being related, are the ones of greatest interest for presenting a higher specific diversity of ferns within the state of Hidalgo.

Keywords : Pteridogeography; Parsimony Analysis of Endemisms; Neotropics.

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