Trillium flexipes, the nodding wakerobin, bent trillium, or drooping trillium, is a spring-flowering perennial that is most common in the midwestern United States. Scattered populations are found as far east as Philadelphia and as far south as Alabama, as well as in the Canadian Province of Ontario. However, it is an endangered plant species in Canada and is rare throughout its Canadian range so that it is protected by law in Ontario. This species is variable, and tends to hang its flower below the leaves in northern areas. Southern strains have a large erect flower. The red or purplish fruit is also showy.
- "Trillium flexipes". NatureServe Explorer. NatureServe. Retrieved May 3, 2008.
- Kew World Checklist of Selected Plant Families
- "Trillium flexipes". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 December 2015.
- Arianne Ransom-Hodges. "Drooping Trillium". Archived from the original on February 7, 2008. Retrieved June 1, 2009.
- http://www.e-laws.gov.on.ca:81/ISYSquery/IRLCDBD.tmp/1/doc Retrieved June 1, 2009.[dead link]
- Flora of North America, Vol. 26 Page 99 Bent trillium, declined trillium Trillium flexipes Rafinesque, Autik. Bot. 133. 1840.
- Case, Frederick W. and Case, Roberta B. (1997). Trilliums. ISBN 978-0-88192-374-2
- Drooping Trillium, Ontario's Biodiversity
- Biodiversity Information Serving Our Nation (BISON) occurrence data and maps for Trillium flexipes
- "Trillium flexipes". Integrated Taxonomic Information System.
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