Welcome to the NPWRC Herbarium

The Northern Prairie Wildlife Research Center's herbarium was established in the 1960's to house reference and voucher specimens of plants for researchers in wetland and waterfowl ecology in the northern Great Plains. Since then, specimens from many other areas of the United States and Canada have been added to the collection. In 1978, the Herbarium (code NPWRC) was listed in the International Index Herbariorum to facilitate inter-herbarium loans and exchanges.

Today, the NPWRC herbarium houses over 6,000 plant specimens. All specimens in the collection are in a searchable database that can be accessed from this page. For more information on the NPWRC Herbarium, please contact the collection's manager using the “Contact Us” form found on this page.

Featured Plant - Gentianella amarella

Plant Image

Sometimes called "felwort," bitter gentian often can be found in bloom well into September. The species occurs circumboreally across the cooler regions of the Northern Hemisphere. Most records in North Dakota are for the northern and western counties.

The unbranched, individual stems of bitter gentian are one-to-two feet tall. Flowers are about three-quarters of an inch long, and vary in color from greenish-white to light lavender. Flowers are stalked and arise in clusters from the points of the stem where the opposite leaves join.

Bitter gentian is an annual or biennial plant. Annual plants reproduce from seed in a single season; biennials finish their reproductive cycle during their second growing season. This likely explains why we do not find bitter gentian in bloom every year. Conditions probably must be just right before the seeds will germinate or second-year plants flower. When they do, bitter gentian can sometimes be found in abundance on the slopes of moderately or lightly grazed prairie.

The bitter extract of many of the gentians was formerly used to stimulate and improve the appetite but I could find no specific references to the use of bitter gentian in this manner.

The gentian family (Gentianaceae) and the genus Gentianella ("little gentian") derive their names from Gentius, Kinq of Illyria who, according to Pliny, discovered the medicinal virtues of these plants. The specific name amarella stems from the Latin amarus which means "bitter." Bitter gentian was first described by the Swedish father of modern botany Carl von Linne (Linnaeus) in 1753.

Author Credit:

"Plant of the Week" comes from a series of articles about native wildflowers of the North Dakota grasslands written by NPWRC biologist Harold A. Kantrud. The articles appeared weekly in local newspapers. Each article is three to four paragraphs in length and usually consists of the life history of the species, its identifying traits, where in North Dakota one can expect to find it, and its nomenclatural history. Kurt A. Adolfson and Jack Lefor provided the many excellent photographs used in the original articles and this resource.