Global Biodiversity Initiative Facility (GBIF)
Tropicos
JSTOR
National Database Sites: these sites compile data and present data for the entire United States.
Webmaster: Eric Ribbens
Global Biodiversity Initiative Facility (GBIF) http://data.gbif.org/welcome.htm is an international data portal containing United States herbarium information.

Tropicos http://www.tropicos.org/Home.aspx

iDigBio https://www.idigbio.org/

Biodiversity Information Serving Our Nation (BISON) http://bison.usgs.ornl.gov/

Progress
Resources
Publications
The U.S. Virtual Herbarium Project: Guide to National Data Portals.

A list of websites that offer searchable access to herbarium specimen data. Please report changes to Eric Ribbens.
Regions
Home
About Us
Portals
The U.S. Virtual Herbarium Project:
Bringing all herbaria into a digital network and demonstrating the value of shared information.
JSTOR Plant Science http://plants.jstor.org/