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Rightcania
Genus Rightcania Friis, P.R. Crane, K.R. Pedersen Foss. Impr., 74(1-2): 68. 31 Aug 2018
- Name
- Rightcania
- 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
- 68
- Year
- 2018
- Parent Taxon
- [Family] Chloranthaceae
- Fossil Status
- fruits
- Type
- Rightcania kvacekii
- Diagnosis
- Fruit a berry with three to five ovules/seeds and a fruit wall of thin-walled parenchyma cells. Stigmatic area sessile, indistinct. Hypanthium fused to
lower part of ovary wall. Ovules pendent, orthotropous to semi-orthotropous, bitegmic, endotestal with a testa of multiple cell layers. Exotesta of several layers of slightly elongate, irregular wavy cells; endotesta a single layer of
cubic to palisade-shaped cells containing densely spaced crystals and fibrous infillings. Outer surface of endotesta smooth. Tegmen several cell layers thick; exotegmen of elongated fibrous cells, mesotegmen and endotegmen with large, slightly elongate and thin-walled cells; inner layers
of tegmen crushed in mature seeds. Embryo tiny; nutritive tissue of isodiametric thin-walled cells.
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