Sessile leaf blade. | Leaf blade shortly petiolate. | Leaf blade shortly petiolate. | Sessile leaf blade. | |
Without petals. | Petals linearis-terete, erect and never curved. | Petals compressed-linearis, horizontal and never erect. | Petals compressed-linearis, horizontal and never erect. | |
Ovary tetragonal, stigma 4, erect and never curved. | Ovary globose pentagonal, stigma 5, curved. | Ovary globose pentagonal, stigma 4–5, curved. | Ovary globose pentagonal, stigma 5, curved. |