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Patokaea
Genus Patokaea Pacyna, Barbacka, Zdebska in Pacyna, Barbacka, Zdebska, Ziaja, Fijałk.-Mader, Bóka, Sulej Rev. Palaeobot. Palynol., 245: 30. 11 Jun 2017
- Name
- Patokaea
- Rank
- Genus
- Authors (Name)
- Pacyna G.
Barbacka M.
Zdebska D.
- Authors (Pub.)
- Pacyna G.
Barbacka M.
Zdebska D.
Ziaja J.
Fijałkowska-Mader A.
Bóka K.
Sulej T.
- Publication
- A new conifer from the Upper Triassic of southern Poland linking the advanced voltzialean type of ovuliferous scale with Brachyphyllum-Pagiophyllum-like leaves [2017/6]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 245
- Page number
- 30
- Year
- 2017
- Parent Taxon
- [Family] Patokaeaceae
- Fossil Status
- leafy twigs (with reproductive organs)
- Type
- Patokaea silesiaca
- Diagnosis
- Shoots branching at acute angles in one plane, bearing leaves helically arranged, distalmost branches with decussate leaves. Leaves rhomboidal or elongated-rhomboidal in shape with basal cushion and short, free part, but sometimes forming extended apex. Ovuliferous cones lax, easily disintegrate. Seed scale-bract complex stalked, seed scale trilobate, with two oval lateral lobes, each bearing one ovule, and one sterile lobe in between, strongly reduced, all lying in one plane. Bract small, leaf-like, merged with ovule-bearing scale stalk in part. Ovules large, laterally attached to the adaxial side of the lobes, partly hidden by the folded margin of the lobes. Ovules oval in outline, with prominent micropylar beak directed basipetally. Seeds broad and oval in outline, with slightly expanded micropylar end. Simple polliniferous cones borne singly at the end of the leafy twigs, small, oval in outline. Microsporophylls helically arranged, consist of stalk and distal free blade. Pollen sacs arranged in a whorl around the microsporophyll stalk. Pollen grains circular in polar view to oval in equatorial or oblique view. Exine surface rugulate on whole specimen. Surface of folds smooth.
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