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The Newlon Corticarium
at the

Claude E. Phillips Herbarium (DOV)

Delaware State University

The word “corticarium ” or bark collection, is derived from Latin cortex, “bark,” “rind” or “ shell” and arium, “a place associated with a specific thing” or; in this case, a collection of like objects. Thus we have Corticarium, a collection of authenticated bark specimens that is well curated and accessible to the scientific community.


The Newlon Corticarium is a unique collection of bark because it is apparently one-of-a-kind; in that it is curated, is open to world-wide bark specimens, is housed in a climate controlled, insect-free facility, and is open to the public for scientific study. The Newlon Corticarium, established in 2008, now numbers about 700 specimens.

The Corticarium is named for Adjunct Professor Charles J. Newlon, USDA Forest Service retired, who taught Dendrology (Tree Identification) and other forestry courses in the Agriculture and Natural Resources Department from 1988-2005. He used botanical
specimens including some bark samples in the courses.

The collection began with a small collection of bark specimens collected in Delaware and Pennsylvania. It grew in size with the transfer of the Winterthur/Duke (WDw/DUKEw) collection of wood specimens when it was discovered that, among the 6000 wood specimens, about 600 wood specimens contained more bark than wood. The latter were added to the Corticarium.

The goal of the Corticarium is to gther bark from collectors nation-wide and world-wide that will provide3-inch x 5-inch bark specimens authenticated by the collector, with information on the county and state, or country in which the specimens were collected.

Pinus rigida
Contributors to the Corticarium include:
Winterthur Musum/Duke University and

Clayton Clomley --- Charles J. Newlon
D. Lee Cromley --- Ray Steiger
Duane L. Green --- Arthur O. Tucker
Daniel R. Kucera