| On the top of the head an elegant crest of six elongated, recurved, clavate feathers, of which the webs are deflected. |
| The commonest type of trichome is uniseriate, two to four-celled, with a clavate or subclavate terminal cell. |
| Labellar papillae show greater diversity, and may be conical, obpyriform, villiform, fusiform or clavate. |
| Included in both these genera were short, rectilinear borings with clavate ends and elongate, curvilinear borings with or without swollen terminations. |
| Apart from size, the two specimens agree in all respects with the possible exception of the disposition of the clavate laterals. |
| The stem is stout, even, or much enlarged at the base so that it is clavate. |
