| The genus, which includes about 75 species, is divided into four subgenera. |
| The volva is a feature of great importance in the study of the Agaricini, of the subgenera Amanita, volvaria, etc. |
| These ingroup species were chosen to represent each of the proposed subgenera and genera from previous phylogenetic studies. |
| Most of the traditionally recognized subgenera of Anchusa are also supported as monophyletic groups by both nuclear and plastid sequence data. |
| Nevertheless, several Lutzomyia species can transmit both, representatives of the Viannia and Leishmania subgenera. |
| The most comprehensive monograph of the genus divides Rhynchospora into two subgenera and 29 sections. |
