Databases
| The Gray Herbarium Index of New World Plant Names | The Gray Index (in part) is now incorporated into the International Plant Names Index |
| The International Plant Names Index | IPNI is a joint project with the Royal Botanic Gardens, Kew and the Australian National Herbaria to provide an online database of the names and associated basic bibliographical details of all vascular plants. |
| All of the lists below are generated from sources that include vascular plants and cryptogams. | |
| Botanists | Authors of botanical names, collectors of botanical specimens, and authors of botanical publications. |
| Publications | Titles and abbreviations of botanical publications with authors, dates of publication and BPH and TL2 references. |
| Specimens | Specimen records, primarily type specimens from the Harvard University Herbaria and New England Botanical Club. |