Slippery Elm

General Information

Taxonomy

Kingdom-- Plantae

Division-- Tracheophyta

Class-- Magnoliopsida

Order-- Rosales

Family-- Ulmaceae

Genus-- Ulmus L.

Species-- Ulmus rubra

The plant is a species of elm that can be found
in Eastern North America.

The name 'slippery elm' comes from the slimy liquid produced when chewing on the inner bark.

The tree is also known as red elm because of the reddish colour of its wood.

U. rubra can provide food to a number of animals like birds, squirels, and many species of moths and butterflies.

Medicinal Uses

it can be found commercially as a part of throat lozenges, herbal teas, and by itself in concentrated pill and liquid forms. Traditionally, it would be used in poultices, tinctures, and teas.

U. rubra is used in Native American medicine as part of an herbal salve to treat cysts, boils, wounds, and inflammation of the skin.

The inner bark of the tree contains mucilage. Mucilage is made up of carbohydrates that form a sticky substance when combined with water. This substance can be used to coat the gastrointestinal tract and mucous membranes.

U. rubra is claimed to cure many gastrointestinal tract problems like coughs, sore throat, colic, diarrhea, constipation, hemorrhoids, irritable bowel syndrome, bladder and urinary tract infections, syphilis, herpes, and for expelling tapeworms.

Although U. rubra is said to cure and treat these ailments, more scientific research is needed to confirm these claims.

These ailments target your digestive system. The system is responsible for breaking down food and absorbing the nutrients in them.

The digestive system is made up of the mouth, esophagus, stomach, small intestine, large intestine, anus, liver, pancreas, and gallbladder.

As research on the tree is limited, its level of safety is questionable. Common side effects include skin irritation and allergic reactions to those that are allergic to elm pollen. In folk medicine, it is consumed by pregnant women to abort the baby, those that are pregnant are advised to not ingest it.

Threats to the Plant

The area of its natural habitat has been steadily decreasing as the land is being converted for logging, agriculture, and urbanization.

Dutch elm disease (DED), a devastating fungal disease that targets species in the Ulmus and Zelkova genera, is one of the biggest threats to the slippery elm as the tree is vulnerable to the disease. Because of DED, the number of mature trees in nature has dwindled significantly.

The spores of this disease are spread mainly by the European elm bark beetle.

U. rubra is vulnerable to a number of insect pests.

The Asian longhorn beetle is an invasive species from China. The female beetle will bore holes in the tree before laying its eggs. When the eggs hatch, the larvae will begin eating the phloem tissue, and as they mature, they will make their way into the tree. creating tunnels. These tunnels weaken the tree and cause death.

Brought to North America by way of imported elms, elm leafminers can now be found in eastern Canada and the northeastern United States. The larvae of this bug eat leaves by going inside them and consuming the inside of the leaf, hence their name. If enough larvae feast on the same leaf, it will wither and die.

U. rubra is listed as "special concern" in Rhode Island and has been extirpated in Maine.

Plan to Save the Plant

As the biggest factor to the species' decreasing population is DED, our plan would be to cross-breed slippery elm specimens with other elm species that are resistant to the disease.

By creating these hybrids, these new elms would boast a resistance to DED, helping to save much of the slippery elm population.

Elms that are native to Asia would be prime partners to create DED-resistant slippery elm. As DED originally came from Asia, these trees would have better resistance to the disease than their American counterparts.