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A new fossil species of Polypodium (Polypodiaceae) from the Oligocene of northern Bohemia (Czech Republic)
Author(s) -
Kvacek Z.
Publication year - 2001
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.20011120302
Subject(s) - polypodiaceae , fern , frond , botany , pteridaceae , epiphyte , subtropics , deciduous , selaginella , biology , geography , ecology
A new fossil representative of Polypodium L. emend. C HING (Polypodiaceae s.str.) was recovered in the Early Oligocene diatomite shales of the Ceske stredohori Mountains, North Bohemia (localities Bechlejovice, Holy Kluk hill). Polypodium radonii sp. nova is characterised on the basis of fragmentary fronds, which have simple pinnatifid laminas, entire pinnae, free, anadromously branched venation, solitary broadly elliptic superficial sori and monolete spores in situ of the Polypodiisporites bock‐witzensis type. This terrestrial (? to epiphytic or epilithic) fern was associated with vegetation of subtropical Mixed Mesophytic (Holy Kluk) and warm temperate Deciduous Broad‐leaved (Bechlejovice) forest types. Actual taxonomy of extant Polypodiaceae s.str. as well as the Tertiary records of this fern group within the Holarctis are reviewed.