| He thought that most of the future work of the committee would be at the level about the species, at the generic and subgeneric levels. |
| Subgeneric diversity was calculated by tallying taxa that cross boundaries. |
| At the subgeneric level, the classification of Valeriana in subgenera and sections is difficult. |
| Another plus is that the genus Rubus includes subgeneric and sectional keys using a combination of primocanes and floricanes as well as inflorescence characters. |
| The book covers generic and subgeneric classification, species listed in each category, and a section on identification of cryptic species. |
| Thus, we believe the single worn dentary presently available is insufficient to establish a subgeneric identification of the fossil prairie dog. |
