Garden Closed

The United States Botanic Garden (USBG) is temporarily closed to the public to reduce the risk of transmitting COVID-19 coronavirus.

Whenever possible, the USBG will reschedule public programs and events originally scheduled during the closure period. Please monitor the USBG website at www.USBG.gov for updates to operating status. Many resources can still be accessed online, including educational worksheets and manuals, fact sheets and more, and some of our programs will also be made available online.

Kauai delissea

Delissea rhytidosperma
Plant Botanical Name: 
Delissea rhytidosperma
USBG Plant Location: 
Conservatory
Conservatory Room Location: 
Hawaii
Plant Threat Level: 
Endangered

Delissea rhytidosperma is an endangered member of the Lobelia family found only on the island of Kauai. The lowland forest habitat where this species grows has been disturbed by overgrazing of domestic and wild animals, the encroachment of invasive nonnative plant species, and naturally occurring landslides. Currently, only 15 plants survive in two remaining wild populations. Measures are being taken to protect these remaining populations, including weed control, fire suppression and fencing to exclude animals and humans. Botanical gardens and seed banks are also working to conserve these plants and seeds.