Founded by Liberty Hyde Bailey in 1935, the Hortorium has historically been the major U. S. center for the systematics of cultivated plants. Today, the Hortorium's mission has expanded to include systematic studies of wild and cultivated plants, ethnobotany, molecular systematics, paleobotany, phylogenetic theory, biodiversity studies, and pharmaceutical studies of tropical plants.

The Hortorium currently has specialists working in oaks, grasses, legumes, and angiosperm fossils. Students interested in graduate studies in the Bailey Hortorium typically apply to the Graduate Field of Plant Biology and choose systematics and/or paleobotany as one of their concentrations. Alternatively, the Bailey Hortorium partners with the New York Botanical Garden in a Graduate Studies Program that involves instruction up to the point of Admission to Candidacy (A-exam) at Cornell's Ithaca Campus and completion of research at the New York Botanical Garden in New York City. Please note that this program requires separate applications to both institutions.

Facilities at the Bailey Hortorium include:

Note: The Cornell Plant Pathology Herbarium (CUP), which holds the systematic collection of fungi and other plant disease-causing organisms, is administered by the Section of Plant Pathology and Plant-Microbe Biology.

Virtual tour

Join Cornell alum and author Summer Rayne Oakes (How to Make a Plant Love You: Cultivate Green Space in Your Home and Heart) as she tours the Herbarium with Associate Curator & Extension Botanist Anna StalterView video.

General Information

Dr. William L. Crepet
Phone: 607-255-7977
Email: wlc1 [at] (wlc1[at]cornell[dot]edu)

Collections Information

BH and CU Herbaria
Email: herbarium [at] (herbarium[at]cornell[dot]edu)

kcn2 [at] (Dr. Kevin Nixon), 607-255-7975

Associate Curator & Extension Botanist
ams15 [at] (Dr.) ams15 [at] (Anna Stalter), 607-255-1052

Assistant Curator & Librarian
pf13 [at] (Peter Fraissinet), 607-255-0443


Databases and E-floras
kcn2 [at] (Dr. Kevin Nixon), 607-255-7975

Ethel Z. Bailey Horticultural Catalogue Collection
daf10 [at] (Dorothy Stiefel)

Paleobotany Collection 
wlc1 [at] (Dr. William Crepet), 607-255-7977

Plant Anatomy Collection 
mag4 [at] (Dr. Maria A. Gandolfo-Nixon), 607-255-3273