| Pinna, a primary division with its leaflets of a bipinnate or tripinnate leaf. |
| Its leaves are hairy, bipinnate, with lobed and toothed, ovate or oblong leaflets. |
| Lepidopteris is a bipinnate frond whose pinnules resemble some species of Alethopteris. |
| Stem and branches pinnate or bipinnate, the pinnae and pinnules alternate. |
| They bear bipinnate leaves with small, oval to lanceolate leaflets. |
| Most Australian species of Acacia have bipinnate leaves, as least when they are in the seedling stage. |
