| Subsequent authors, stressing differences in the teeth, have placed M. richardsoni in the subgenus Aulacomys of Rhoads. |
| However, P. rufuschaneyi does not have the characteristic ligulate nectar disc and apiculate anthers that are also found in subgenus Gomphidium. |
| One is the distinctive Apodemus agrarius, lone representative of the subgenus Apodemus. |
| Monroella and Petriea exhibit these features and by the development of indehiscence of the pod, the Huttonella subgenus subsequently arose. |
| Glycine max belongs to the subgenus Soja, which also contains G. soja and G. gracilis. |
| Under the latter view Camellia is regarded as a subgenus or section of Thea. |
