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Platanervia
Genus Platanervia Krassilov in Krassilov, Lewy, Nevo, Silant. Late Cret. (Turon.) Fl. S. Negev, Israel 113. Apr 2005
- Name
- Platanervia
- Rank
- Genus
- Authors (Name)
- Krassilov V. A.
- Authors (Pub.)
- Krassilov V. A.
Lewy Z.
Nevo E.
Silantieva N.
- Publication
- Late Cretaceous (Turonian) Flora of Southern Negev, Israel [2005/4]
- Authors (Book)
- Krassilov V. A.
Lewy Z.
Nevo E.
Silantieva N.
- Book
- Late Cretaceous (Turonian) Flora of Southern Negev, Israel
- Page number
- 113
- Year
- 2005
- Parent Taxon
- [Order] Platanales
- Fossil Status
- leaves
- Type
- Platanervia integrifolia
- Diagnosis
- Leaves simple, small to medium-sized, long petiolate.
Leaf-blade broadly rhomboid to obcordate, base broadly, seldom
narrowly cuneate, decurrent, apex notched, margin entire, undulate to
shallowly lobed. Venation semicraspedodromous. Midrib much weaker
than and not in line with the petiole. Laterals few, widely spaced, slightly
arched, terminating at small prominences of the margin, forking before
the margin, one arm looping with the next lateral vein. Branching of the
laterals decreases in ascending order, in basal veins producing strong
basiscopic and weaker acroscopic branches. Infrabasal veins one pair,
feebly developed, giving rise to the intramarginal vein. Tertiary veins
branched-scalariform, seldom simple and percurrent, forming irregular polygonal areoles. Petioles and shoot axes transversely striate. Stomata
scattered, anomocytic, trichomes peltate.
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