The Specimen Explorer for Phytotaxonomists has been developed in order to facilitate advanced search functions for occurrence data of WFO partners. Back then, the GBIF data portal had very limited features and was missing important search criteria (e.g. free-text search for localities and collectors). Nowadays, the new GBIF data portal for occurrence search offers state-of-the-art filters on almost every data item for occurrences, including a search over all fields.
For this reason, the Specimen Explorer for Phytotaxonomists will be retired - please use the GBIF portal to find occurrences of interest: View occurrences at GBIF.
The World Flora Online can be found at www.worldfloraonline.org, with its taxonomic backbone (the WFO Plant List) at wfoplantlist.org/plant-list.