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Pachypteris auriculata
Taxonomy
Pachypteris auriculata was named by Passalia (2007). It is not extant. It is considered to be a form taxon.
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Pachypteris auriculata Passalia |
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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.
†Pachypteris auriculata Passalia 2007
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. G. Passalia 2007 | Sterile fronds, at least, bipinnate. Rachis with longitudinal striation. Pinnae inserted at wide angles (80º-90º), imparipinnate. Adjacent pinnae not superimposed. Pinnules numerous, opposite to sub- opposite; inserted at wide angles (near 90º). Adjacent pinnules scarcely spaced, inserted to rachis by contracted bases. Pinnules with one basal pair of rounded isodiametric auricles (absent or little differentiated in the apical pinnules) separated from the rest of the pinnule by a marked incision. Pinnular margins parallel, entires but with slight lobes and rounded apex. Venation open; each pinnule supplied by a middle vein of straight course, dichotomous once near apex; and lateral veins diverging with acute angles (45-50º) and forked dichotomously (once or twice) or trichotomously. |