USNH meaning in Regional ?

Answer: What is United States National Herbarium mean?

The United States National Herbarium is a collection of five million preserved plant specimens housed in the Department of Botany at the National Museum of Natural History, which is part of the Smithsonian Institution. It represents about 8% of the plant collection resources of the United States and is one of the ten largest herbaria in the world.

The herbarium was founded in 1848, when the first collections were accessioned from the United States Exploring Expedition, when botanists pressed approximately 50,000 specimens, representing 10,000 species of plants.

reference

Full Form	Category
University System of New Hampshire	Academic & Science
Unitarian Society of New Haven	Community
United States Naval Hospital	Governmental
United States Naval Home	Governmental
U.S. Naval Hospital	Medical
United States National Herbarium	Regional