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Physcidium
Genus Physcidium Hedenäs, Bomfl., Friis in Bomfl., Hedenäs, Friis, P.R. Crane, K.R. Pedersen, M.M. Mendes, J. Kvaček Foss. Impr., 79(2): 107. 22 Dec 2023
- Name
- Physcidium
- Rank
- Genus
- Authors (Name)
- Hedenäs L.
Bomfleur B.
Friis E. M.
- Authors (Pub.)
- Bomfleur B.
Hedenäs L.
Friis E. M.
Crane P. R.
Pedersen K. R.
Mendes M. M.
Kvaček J.
- Publication
- Fossil mosses from the Early Cretaceous Catefica mesofossil flora, Portugal – a window into the Mesozoic history of Bryophytes [2023/12]
- Journal
- Fossil Imprint
- Volume
- 79
- Issue
- 2
- Page number
- 107
- Year
- 2023
- Parent Taxon
- [Family] Diphysciaceae
- Fossil Status
- leafy twigs
- Type
- Physcidium tortuosum
- Diagnosis
- Leaves with an oblong basal portion narrowing above to become linear, long, narrow and parallel-sided, with a shortly narrowed to obtuse or rounded apex. Costa occupying 25–35 % of leaf width. Costa with 1–2 layers of guide cells, only abaxial stereids, or both abaxial and adaxial stereids, and an epidermis that may or may not be differentiated. Upper leaf lamina 2–4-stratose, cells papillose. Cells of basal lamina sometimes partly inflated.
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