A new Oligocene fern of Dryopteridaceae from the Českéstředohoří Mts (Czech Republic)

A new palaeobotanical site was recovered at artificial excavations within the city district of Ústí nad Labem called Mojžíř in northern Bohemia (Czech Republic) that yielded slabs of Oligocene tephritic pyroclastic rocks with plant impressions. The fossiliferous layer belongs to the Děčín Formation of the České středohoří Mts. dated to the Oligocene (30.8–24.7 Ma). One of the recovered fossils belongs to a new leptosporangiate fern matching modern representatives of Polystichum Roth (Dryopteridaceae Herter). These frond fragments are partly fertile and allow studying the position of sori and details of indusia and spores. This fossil fern is described here as a new species of Polystichum, P. pacltovae Kvaček sp. nov., which matches the modern European species of Polystichum, namely Polystichum braunii (Spenner) Fée . Accompanying plant fossils include another fern frond described as "Aspidium "elongatum Heer (non Swartz) of unknown affinities, fragmentary needles assigned to Pinus cf. hepios (Unger) Unger of the Pinaceae and leaf impressions of Betulaceae comparable to Betula brongniartii Ettingshausen.

The fern family Gleicheniaceae (Polypodiopsida) in Brazil

We carried out a taxonomic study of the leptosporangiate fern family Gleicheniaceae (Polypodiopsida) in Brazil out and accepted 17 species distributed in three genera. Taxonomic descriptions to the whole family, genera and species are provided, as well as keys to the genera and species, synonymies, maps, illustrations, and notes. We also provide nomenclatural notes and propose 21 lectotypes.

Prodromus of a fern flora for Bolivia. XIII. Anemiaceae

We provide a synopsis to the leptosporangiate fern family Anemiaceae in Bolivia. The single genus in the family, Anemia, comprises 115 species in the Neotropics, Africa, India, and islands in the Indian Ocean. Sixteen species are known from Bolivia, several of which are widespread in the Neotropics; one species, Anemia myriophylla, is endemic to Bolivia. Hybridization is likely when species co-occur.

Prodromus of a fern flora for Bolivia. XII. Lygodiaceae

We provide a synopsis to the leptosporangiate fern family Lygodiaceae in Bolivia, comprising two species in the genus Lygodium, both of which are widely distributed in the Neotropics.