Pressing Plant Matters in the Bean Museum Herbarium
The Y Report

Pressing Plant Matters


A small pink flower.

“Sometimes we get phone calls with people thinking it’s a health food place where they get herbs,” says biology professor Leigh A. Johnson (BS ’91), curator of BYU’s Stanley L. Welsh Herbarium. But the herbarium is no Whole Foods. Located in a portion of the Bean Life Science Museum not open to the public, it “is a repository of pressed, dried plant specimens that document a particular location and time.”

A small pink flower with leaves on its stem.

BYU’s herbarium boasts the world’s most comprehensive coverage of plants from the intermountain region, but it also has specimens from international locations including Chile, Argentina, Mexico, and Korea. The collection has supported a wide array of research—from anthropological studies about historical uses of seeds to mapping the spread of species in the intermountain region. Dependent on the preservation work of botanists from the past, the herbarium allows today’s researchers to pay it forward by preserving specimens that are “going to have value in the next generation and the generation after that,” says Johnson.

A pressing of several small pink flowers on a long, leafy stem with insect-made holes in them.
Sabatia dodecandra: The insect-made holes in this specimen provide insights for entomologists and botanists alike. Photo by Bradley Slade.
A pressing of a group of yellow flowers on a long leafy stem with several ferns extending from the moss-made base.
1860: The year that a missionary collected this specimen of Achillea millefolium (commonly yarrow) while serving in England. He took extra care to press the plant artfully, including moss at the base. Photo by Bradley Slade.
Small purple flowers whose petals are surrounded by large leaves.
Cyclandenia humilis: This rare species, found only in Utah, California, and northern Arizona, has been the subject of several student projects on genetic variation. Photo by Bradley Slade.
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