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Issue: Vol. 677 No. 2: 16 Dec. 2024
Type: Article
Published: 2024-12-16
DOI: 10.11646/phytotaxa.677.2.7
Page range: 181-188
Abstract views: 134
PDF downloaded: 8

Pleopeltis glandulosa (Polypodiales: Polypodiaceae), a new species from the Prepuna district of Monte biogeographic province in Argentina

Instituto Criptogámico, Área Botánica, Fundación Miguel Lillo (FML), Miguel Lillo 251, T4000JFE San Miguel de Tucumán, Argentina. Grupo GIVE, Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Instituto ICBIA (UNRC-CONICET), Universidad Nacional de Río Cuarto, Ruta 36 km 601, X5804ZAB Río Cuarto, Córdoba, Argentina. IUCN SSC Temperate South American Plants Specialist Group, Species Survival Commission (SSC).
Instituto de Taxonomía Fanerogámica y Palinología, Área Botánica, Fundación Miguel Lillo (FML), Miguel Lillo 251, T4000JFE San Miguel de Tucumán, Argentina. Cátedra de Biología Vegetal, Facultad Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán. Miguel Lillo 205, T4000JFE San Miguel de Tucumán, Argentina.
Instituto de Taxonomía Fanerogámica y Palinología, Área Botánica, Fundación Miguel Lillo (FML), Miguel Lillo 251, T4000JFE San Miguel de Tucumán, Argentina
Polypodiopsida Polypodiaceae Argentina Prepuna Monte pteridophytes

Abstract

Pleopeltis glandulosa sp. nov. (Polypodiaceae) is described as new species from the Prepuna, a xeric environment dominated by columnar Cactaceae of the biogeographic province Monte. It is characterised by having laminar bases truncate, adaxially glabrous and abaxially completely covered with scales, the scales margins with glandular papillae, and the apices filiform, with a conspicuous glandular apical cell with mucilage. Morphologically, P. glandulosa most resembles P. thyssanolepis, not recorded till the moment in Argentinian flora, but widespread from Mexico to Bolivia, because of its strongly bicolorous rhizome scales, pinnatifid laminae with the abaxial surface covered by scales, and obscure veins, but differs mainly by the glandular trichomes at the margins of rhizomatic scales, and laminar scales with glandular papillae at the margins and the conspicuous glandular apical cell, the alate stipes, and the inconspicuous hydathodes.

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