Back
Vitiphyllum sewardii
Vitiphyllum sewardii Boulter, Z. Kvaček Spec. Pap. Palaeontol., 42: 114. 1989
- Name
- Vitiphyllum sewardii
- Rank
- Species
- Generic Name
- [Genus] Vitiphyllum
- Authors (Pub.)
- Boulter M. C.
Kvaček Z.
- Publication
- The Palaeocene flora of the Isle of Mull [1989]
- Journal
- Special Papers in Palaeontology
- Volume
- 42
- Page number
- 114
- Year
- 1989
- Fossil Status
- leaves
- Stratigraphy
- Paleocene
- Location
- Leaves simple, almost orbicular, petiolate, palmately veined, broader than long, reaching a breadth of 17.5 cm and a length, from the summit of the petiole to the tip of the lamina, of approximately 14 cm. Apex broadly triangular and obtuse, base deeply cordate with a median, entire sinus flanked by two rounded basal lobes. Margin irregularly sinuate, coarsely dentate or entire, varying in different parts of the lamina: the largest and most prominent marginal lobes occur at the ends of the radially disposed
ribs. The lamina is not strictly symmetrical, one half having larger marginal projections than the other. At the base of the lamina the median rib gives off a strong branch on each side at an angle of approximately 35 degrees, at a point close to the junction of the two lowest ribs with the midrib. Two other veins pass out laterally to the margin almost at right angles, each giving off four outwardly curving veins from the lower side. Two more slender intramarginal veins follow a steep downward course below the radial ribs. From the median rib three alternately attached lateral veins arise at an acute angle and the lower two fork in the upper part of their oblique course. The two lowest obliquely ascending ribs from the base of the lamina fork a short distance from their origin and each bifurcates twice before reaching the margin. The tertiary veins, 3-4 mm apart, form an alternating series of meshes at right-angles to the radially arranged, main ribs. Petiole reaching a length of 4.5 cm or more.
- Paleoregion
- Eurasia (Europe)
Data for Holotypus
- Repository
- Natural History Museum, London, U.K.
- Repository Number
- V.25184
