PUCCINIÆI.
a. Spores stipitate.
| Spores multiseptate— | |
| moniliform | Xenodochus. |
| cylindrical | Aregma. |
| biseptate | Triphragmium. |
| uniseptate | Puccinia. |
b. Spores immersed in gelatine.
| Stroma tremelloid and expanded | Gymnosporangium. |
| clavate or club-shaped | Podisoma. |