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Wilkinsoniphyllum
Taxonomy
Wilkinsoniphyllum was named by Jud et al. (2018). It is considered to be a form taxon.
It was assigned to Menispermaceae by Jud et al. (2018) and Stiles et al. (2020).
It was assigned to Menispermaceae by Jud et al. (2018) and Stiles et al. (2020).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Wilkinsoniphyllum Jud et al. |
| 2020 | Wilkinsoniphyllum Stiles et al. |
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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.
G. †Wilkinsoniphyllum Jud et al. 2018
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†Wilkinsoniphyllum menispermoides Jud et al. 2018
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. A. Jud et al. 2018 | The leaf is simple and petiolate. The preserved petiole is 4.3 mm long and 1.7 mm wide at the point of attachment to blade, which we interpret as the upper pulvinus (Fig. 4A, D at arrow a). The petiole attachment is marginal (Fig. 4A, D). Slightly more than half of the blade is preserved, but one lateral half is nearly complete. The original shape is wide ovate (assuming medial symmetry). The blade is 6 cm long and 3.2 cm from medial primary to right margin (estimated L:W 0.9). The base is concavo‐convex and the apex is obtuse, rounded (Fig. 4A, B), and has a mucronate tip that is 0.4 mm long (Fig. 4B at arrow b). The primary vein framework is suprabasal actinodromous with three primary veins and two basal secondary veins (Fig. 4A, D). The midvein is slightly wider than lateral primaries, reaching the leaf apex and extending into the mucronate tip. Lateral primary veins diverge from the medial primary at 33° and 43°; they extend about five‐sixths the distance to apex into the distal half of the lamina. The secondary vein framework is brochidodromous, and the secondary veins are alternate and diverge from the medial primary vein at 50–65°. The secondary veins are curved toward the apex and join the supradjacent veins by serial loops at wide angles; the secondary angles are uniform, with spacing increasing toward base. The agrophic veins are simple with looping minor secondary veins. An incompletely preserved fimbrial vein tapers from the base (Fig. 4D, at arrows b and c) toward the apex (Fig. 4C at arrow; 4B at arrow a). The tertiary venation is mixed opposite/alternate percurrent, and the tertiary vein course is generally straight with the angles increasing exmedially. The fourth order veins are regular polygonal reticulate and forming areoles that are 0.3–1.0 mm wide. The fifth order veins are regular polygonal reticulate, while the sixth order of veins is regular polygonal reticulate. Areolation is well developed; the areoles are 4‐ to 5‐sided and of uniform size (Fig. 4B). |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||