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Nothofagus tasmanica
Taxonomy
Nothofagus tasmanica was named by Hill (1983). It is not extant. It is considered to be a form taxon.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1983 | Nothofagus tasmanica Hill |
| 1991 | Nothofagus tasmanica Hill |
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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.
†Nothofagus tasmanica Hill 1983
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill 1991 | Leaf symmetrical, ovate, 1.3-9.0 cm wide. Leaf apex acute, base symmetrical or asymmetrical, acute. Leaf margin irregularly serrate, with glandular serrations present over the entire leaf margin, or sometimes restricted to the apical half to two-thirds. One to three serrations per secondary vein. Venation simple claspedodromous, with 6-25 secondary veins arising from the primary vein at about 45°. Secondary veins straight or slightly curved. Secondary veins and branches run straight into serration apex. Fimbrial vein poorly formed or absent. Intersecondary veins rare or absent. Tertiary veins percurrent, convex, oblique. Upper epidermal cells heavily cutinized, irregular, with cuticle extending between cells to form cuticular pegs and flanges. Venous cells more regularly arranged than non-venous cells. Unicellular conical trichome bases with unmodified basal cells occur over the veins and only rarely between them. Trichomes short (approximately 20 micrometers), non-glandular, unicellular, tapering to an acute apex. Glandular trichomes absent. Lower epidermal cells thinly cutinized, irregular, with somewhat sinuous walls. Venous cells smaller, heavily cutinized and with straight walls. Stomates abour 28 micrometers wide, probably confined to areoles. Subsidiary cells cyclocytic, more heavily and irregularly cutinized than epidermal cells. Non-glandular trichomes absent from lower epidermis. Glandular trichome bases present rarely on the lower epidermis. |