A Arnold Arboretum Herbarium (1872–). Also known as Arnold Arboretum and Herbarium of the Arnold Arboretum.
- Location: Harvard University, 22 Divinity Avenue, Cambridge, Massachusetts 02138, U.S.A.
- Abbreviation: A
- Fully integrated with Oakes Ames Orchid Herbarium (AMES) and Gray Herbarium (GH) in the Harvard University Herbaria, but specimens from Arnold Arboretum Herbarium should be cited as "A". All information regarding A is included with the Harvard University Herbaria. The 1 318 000 specimens in A are included in the total given for the Harvard University Herbaria (listed under GH).
- Associated publications:
- Arnoldia; a continuation of the Bulletin of Popular information of the Arnold Arboretum, Harvard University.
- Journal of the Arnold Arboretum