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Laurophyllum acuminatum
Taxonomy
Laurophyllum acuminatum was named by Hill (1986) [Number of specimens: One.
parataxon NER/009 Hill 1982, p. 63, pl. 2 fig. 12.]. Its type specimen is Holotype: N-0024, 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 acuminatum Hill p. 333 figs. 2C, 9 A-E |
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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 acuminatum Hill 1986
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill 1986 | Lamina. Asymmetrical, obovate. Base acute, slightly asymmetrical; apex unknown. Leaf length 7.4 cm, width 1.3 cm. Petiole unknown.
Venation. Primary vein slightly curved, massive. Venation pattern eucamptodromous. Nine uniformly curved secondary veins arise from the primary vein at an average of 27°. This angle increases from basal to apical secondaries. Tertiary veins percurrent. Lower epidermis. Non-venous cells irregular, with a variable number of sides and generally straight walls. Cuticular pegs small and blunt; flanges irregularly thickened. Venous cells longer and narrower than nonvenous cells. Stomata generally confined to areoles, oriented at random. Slightly larger stomata occur rarely over veins. Trichome bases with a small, irregularly shaped, thickened foot cell and unmodified basal cells occur commonly over veins. Trichomes not preserved. Upper epidermis. As for lower epidermis, except stomates and cuticular pegs absent and trichome bases have a small, irregularly shaped, heavily thickened foot cell and small radial basal cells and are less frequent in occurrence. |