The following lists were compiled through consultation of Index Herbariorum and through the efforts of individuals associated with CNH.

Thiers, B. [continuously updated]. Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden's Virtual Herbarium. http://sweetgum.nybg.org/ih/

• Connecticut
• Maine
• Massachusetts
• New Hampshire
• New Jersey
• New York
• Pennsylvania
• Rhode Island
• Vermont