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Kvacekispermum
Genus Kvacekispermum Friis, P.R. Crane, K.R. Pedersen Foss. Impr., 74(1-2): 71. 31 Aug 2018
- Name
- Kvacekispermum
- Rank
- Genus
- Authors (Pub.)
- Friis E. M.
Crane P. R.
Pedersen K. R.
- Publication
- Rightcania and Kvacekispermum: Early Cretaceous seeds from eastern North America and Portugal provide further evidence of the early chloranthoid diversification [2018/8]
- Journal
- Fossil Imprint
- Volume
- 74
- Issue
- 1-2
- Page number
- 71
- Year
- 2018
- Parent Taxon
- [Family] Chloranthaceae
- Fossil Status
- seeds
- Type
- Kvacekispermum rugosum
- Diagnosis
- Seeds broadly obovate in lateral view and almost circular in transverse section with coarsely rugulate to reticulate surface formed from the uneven outer surface of endotesta in which the depressions are arranged in poorly
defined grooves. Stigmatic area sessile on the fruit apex, slightly raised, hemispherical. Ovule pendent, orthotropous, bitegmic, endotestal. Endotesta comprised of a single layer of palisade-shaped cells with densely spaced crystals and fibrous infillings. Tegmen crushed in mature seeds. Embryo
tiny; nutritive tissue of isodiametric thin-walled cells.
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