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Laurophyllum lanceolatum
Taxonomy
Laurophyllum lanceolatum was named by Hill (1986) [Number of specimens: One.
Parataxon NER/021 Hill 1982, p. 67, pl. 2 fig. 16.
]. Its type specimen is Holotype: N-0001, housed in the Botany Department, University of Tasmania., a leaf (Cuticles), and it is a compression fossil. Its type locality is Nerriga Flora, which is in an Eocene/Eocene fluvial-lacustrine siltstone/mudstone in Australia.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Laurophyllum lanceolatum Hill p. 339 figs. 2 G, 9 F-H |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Laurophyllum lanceolatum Hill 1986
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill 1986 | Lamina. Symmetrical, elliptical. Base and apex acute, symmetrical. Leaf length 3.6 cm, width 1.1 cm. Petiole unknown. Venation. Primary vein straight, massive. Venation pattern weakly brochidodromous. 19 secondary veins arise from the primary vein
at a uniform angle of 65 °. Poorly developed simple intersecondary veins occur rarely. Tertiary veins weakly percurrent. Lower epidermis. Non-venous cells irregular, with a variable number of sides and sinuous walls. Cuticular flange slightly thickened. Cells over major veins longer and straighterwalled than non-venous cells. Stomata confined to areoles, oriented at random. Trichome bases with a small, circular, thickened foot cell occur frequently over veins and less frequently between them. Basal cells unmodified over veins, radial between them. Trichomes not preserved. Upper epidermis. As for lower epidermis except stomates absent, non-venous cells with curved or slightly sinuous walls, venous cells longer, narrower, and straighter-walled than non-venous cells and trichome bases occur only over veins with a relatively low frequency. |