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Polystichum pacltovae
Polystichum pacltovae Z. Kvaček in Z. Kvaček, Teodoridis Neues Jahrb. Geol. Paläontol., Abh., 295(1): 10. 1 Jan 2020
- Name
- Polystichum pacltovae
- Rank
- Species
- Generic Name
- [Genus] Polystichum
- Authors (Name)
- Kvaček Z.
- Authors (Pub.)
- Kvaček Z.
Teodoridis V.
- Publication
- A new Oligocene fern of Dryopteridaceae from the Českéstředohoří Mts (Czech Republic) [2020/1]
- Journal
- Neues Jahrbuch für Geologie und Paläontologie Abhandlungen
- Volume
- 295
- Issue
- 1
- Page number
- 10
- Year
- 2020
- Fossil Status
- foliage
- Stratigraphy
- Oligocene
- Strat. comment
- Děčín Formation
- Location
- Mojžíř, Ústí nad Labem, Ústecký kraj, Czech Republic
- Paleoregion
- Eurasia (Europe)
Data for Holotypus
- Repository
- Národní Muzeum, Prague, Czech Republic
- Repository Number
- NM G 12419
- Diagnosis
- Fern foliage fragmentary, preserved parts of
fronds double pinnate, pinnae at the angles of 60 to 70°, narrow
elongate, up to 60 mm long and 20 mm broad, pinnules
almost of the same size, elongate or slightly falcate, gradually
diminishing in size towards tips of pinnae, arranged in
weekly catadromy to isodromy, sessile “aletopterid”, up to
10 mm long and 4 mm broad at base, spinose at tips, subcordate
to obliquely truncate, symmetrical, rounded or shortly
decurrent at base, densely spiny toothed on margin, venation
simple free, midrib straight, secondary veins craspedodromous,
slightly bent apically, simple or rarely forked,
in ca. 7 pairs, blades partly sterile, some with sporangia, sori
in 1 row on each side of midrib, in up to 6 pairs or solitary
near the midrib, covered by rounded indusia up to 1.5 mm
in diameter, centrally attached, partly leaving only rounded
traces.
