| rnpn-package | Interface to the National Phenology Network API |
| lookup_names | Look up species IDs by taxonomic or common name |
| npn_allobssp | Get all observations for a particular species or set of species |
| npn_indsatstations | Get all observations for a particular species or set of species. |
| npn_indspatstations | Get all observations for a particular species or set of species. |
| npn_obsspbyday | Get observations by day for a particular species or set of species. |
| npn_species | Get scientific names. |
| npn_species_comm | Get scientific names. |
| npn_species_id | Get scientific names. |
| npn_species_itis | Get scientific names. |
| npn_species_sci | Get scientific names. |
| npn_species_search | Get scientific names. |
| npn_species_state | Get scientific names. |
| npn_stationsbystate | Get number of stations by state. |
| npn_stationswithspp | Get a list of all stations which have an individual whom is a member of a set of species. |
| rnpn | Interface to the National Phenology Network API |
| taxonlist | Lookup-table for IDs of species and common names |