| Lobation patterns can be loosely classified as pinnate, binate, or ternate. |
| All of these foliage forms are planate pinnate fronds, frequently with open venation. |
| Blade of basal leaves pinnate, leaflets roundish, toothed, sometimes narrow-lobed. |
| They produced several types of foliage all characterized by pinnate leaves with open dichotomous venation. |
| The most common elements are parallel-veined leaves that resemble cordaites but that could be isolated pinnules of a pinnate leaf. |
| Green stems are interconnected by sensitive petioles and bear pinnate leaves. |
