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Friedsellowia
Genus Friedsellowia Löwe, B.A.R. Mohr, Coiffard, Bern.-de-Oliv. Palaeontographica, Abt. B, Paläophytol., 289(4-6): 142. Jul 2013
- Name
- Friedsellowia
- Rank
- Genus
- Authors (Pub.)
- Löwe S. A.
Mohr B. A. R.
Coiffard C.
Bernardes-de-Oliveira M.
- Publication
- Friedsellowia gracilifolia gen. nov. et sp. nov., a new gnetophyte from the Lower Cretaceous Crato Formation (Brazil) [2013/7]
- Journal
- Palaeontographica
- Volume
- 289
- Issue
- 4-6
- Page number
- 142
- Year
- 2013
- Parent Taxon
- [Order] Gnetales
- Fossil Status
- leafy stems (with reproductive organs)
- Type
- Friedsellowia gracilifolia
- Diagnosis
- Branching plane, slender articulated
axes, monoecious with microsporangiate and
ovulate reproductive organs. In the juvenile state bearing
two broad cotyledons. Adule plane with long, narrow
lanceolace leaves, attached in whorls of usually
four {or more?), but sometimes with two oppositely
arranged leaves. Venation of cotyledons and leaves
parallel with typical chevron type veins of higher order.
Ovulate cone comprising several ovulate reproductive
units, subtended by more than one set of
scales. Ovulate structures in a whorled arrangement of
two or four in the proximate part of the cone, or in an
opposice-decussate arrangement {two units) in the
distal part. Ovulate cones sessile with ca. 8-16 {or
more) ovules/ seeds. Microsporangiate cones small,
sitting terminally on chin axes, similarly structured as
ovulate cones with more and smaller scales.
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