The Carnegie Museum herbarium (CM) has over 540,000 worldwide vascular plant specimens as well as the best representation in any herbarium of specimens from western Pennsylvania and the Upper Ohio Basin. CM holds the private herbarium of Hannibal and Tyrecca Davis containing 20,000 specimens with a concentration on Rubus (Rosaceae).

GBIF url: https://www.gbif.org/dataset/f3f03cbf-1a01-4739-ae15-c1355b8c2dbf
Citation: Carnegie Museums (2026). Carnegie Museum of Natural History Herbarium. Occurrence dataset https://doi.org/10.15468/d51v1f accessed via GBIF.org on 2026-08-07.