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Kajanthus
Genus Kajanthus M.M. Mendes, G.W. Grimm, Pais, Friis Grana, 53(4): 286. 31 Jul 2014
- Name
- Kajanthus
- Rank
- Genus
- Authors (Pub.)
- Mendes M. M.
Grimm G. W.
Pais J.
Friis E. M.
- Publication
- Fossil Kajanthus lusitanicus gen. et sp. nov. from Portugal: floral evidence for Early Cretaceous Lardizabalaceae (Ranunculales, basal eudicot) [2014/7]
- Journal
- Grana
- Volume
- 53
- Issue
- 4
- Page number
- 286
- Year
- 2014
- Parent Taxon
- [Family] Lardizabalaceae
- Fossil Status
- flowers
- Type
- Kajanthus lusitanicus
- Diagnosis
- Flower small, trimerous, with
staminate and pistillate organs in the same flower.
Floral parts tightly packed. Perianth composed of six bulky perianth parts arranged in two whorls surrounded by narrow perianth parts, apparently also in
two whorls. Androecium of six stamens in two whorls
on the same radii as the bulky perianth parts. Stamen
base broad and bulky. Anther broadly attached to the
stamen base. Anthers tetrasporangiate with projecting
theca. Dehiscence extrorse by longitudinal slits.
Pollen tricolpate with finely punctate tectum.
Gynoecium superior composed of three free carpels
closely adhering along the ventral faces. Carpels of
almost the same breadth and width for their full
length. Placentation marginal with many slightly
curved ovules arranged in two longitudinal rows.
Stigmatic surface at top of carpels undifferentiated.
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