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Stopesia
Genus Stopesia T. Yamada, M. Kato Acta Phytotax. Geobot., 59(3): 228. 2008
- Name
- Stopesia
- Rank
- Genus
- Authors (Pub.)
- Yamada T.
Kato M.
- Publication
- Stopesia alveolata, a fossil seed of Trimeniaceae from the Lower Cretaceous (Albian) of Hokkaido, northern Japan [2008]
- Journal
- Acta Phytotaxonomica et Geobotanica
- Volume
- 59
- Issue
- 3
- Page number
- 228
- Year
- 2008
- Parent Taxon
- [Family] Trimeniaceae
- Fossil Status
- seeds
- Type
- Stopesia alveolata
- Diagnosis
- Seed ellipsoid, 3 mm long, 2.2 mm thick, anatropous, bitegmic. Endosperm well developed, occupying larger area than perisperm. Embryo minute,
encased in the micropylar region of endosperm. Micropyle endo- and exostomic. Antiraphal vascular bundles absent. Inner integument operculate
in endostomic region, but mostly crushed in other areas. Testa consisting of exotesta and mesotesta. Exotesta lignified, consisting of 1-5 layers of isodiametric cells, surface alveolate. Mesotesta parenchymatous, consisting of 4 or 5 layers of cells elongated longitudinally to seed axis.
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