| Thus we considered the number of lateral costae in S.7 spiriferformis to be within the infraspecific variation of Sinostricklandiella robusta. |
| The present work represents the first comprehensive treatment of Alnus maritima at the infraspecific level. |
| Data are presented for a total of 223 species in Canada, including 18 species with more than one infraspecific taxon, for a total of 248 taxa. |
| The Asian species are represented by three specific and two infraspecific taxa. |
| What deviations are indicative of incorrectly identified material rather than natural infraspecific variation? |
| This nomenclator contains all specific and infraspecific names attributed to the suborder. |
