WASHINGTON (AP) - The U.S. Botanic Garden on the National Mall is hosting a special open house for Endangered Species Day to highlight the many plants that are in danger of disappearing.

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The event Friday from 10 a.m. to 2 p.m. is hosted with the U.S. Fish and Wildlife Service and the Endangered Species Coalition.

It will include a look at rare and endangered plants, as well as a focus on disappearing wildlife.

Researchers say in the United States alone, 792 plant species are listed as endangered or threatened under the Endangered Species Act.

The event will include 22 exhibitors from federal agencies and conservation groups.

The Botanic Garden is open free of charge every day.