| Characters/species | M. deflexa | M. helvola | M. phlogiformis | M. serpyllifolia |
|---|---|---|---|---|
| Petiole (mm) | Absent or up to 0.6 | Absent or up to 0.5 | Absent or 2-5 | Absent or ca. 0.4 |
| Pedicel (mm) | 3-5 | 0.7-1 | 2-9 | 1.3-3 |
| Leaf trichomes | Glandular trichomes, and spherical glands | Setose and spherical glands | Glandular trichomes | Setose and spherical glands |
| Hypanthium shape | Cylindrical | Urceolate | Urceolate | Campanulate |
| Sepal length (mm) | 3-3.2 | 1-2 | 3.5-4 | 1.3-4 |
| Sepal | Deflexed | Ascending | Ascending | Ascending |
| Anther sporangia | Tetrasporangiate | Polysporangiate | Tetrasporangiate | Tetrasporangiate |
| Distribution | Minas Gerais, Goiás | Goiás, Mato Grosso do Sul, Mato Grosso, Minas Gerais | Paraná, Espírito Santo, Minas Gerais, Rio de Janeiro, São Paulo, Goiás, Mato Grosso do Sul, Mato Grosso, Bahia, Distrito Federal | Rio de Janeiro, Minas Gerais, Goiás, Bahia, Distrito Federal |