Dioscorea floridana

Florida yam
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Dioscoreales
Family: Dioscoreaceae
Genus: Dioscorea
Species:
D. floridana
Binomial name
Dioscorea floridana
Bartlett
Synonyms[1][2]
  • Dioscorea villosa subsp. floridana (Bartlett) R. Knuth
  • Dioscorea villosa var. floridana (Bartlett) H.E. Ahles

Dioscorea floridana, the Florida yam, is a plant species native to Florida, Alabama, Georgia and South Carolina. It grows in wet and sandy places at low elevations.[3][4]

Dioscorea floridana is a perennial vine twining over other vegetation and spreading by means of yellow underground rhizomes. Stems can reach a height of over 4 m off the ground. Leaves are egg-shaped to triangular, up to 12 cm long, not clasping the stem. Flowers are yellow-orange.[3][5][6][7][8] D. floridana flowers from June to November.[9]

Although not considered to be in any active danger, D. floridana's native range is so limited that it is of conservational interest.[10]

References

  1. ^ Tropicos
  2. ^ The Plant List
  3. ^ a b Flora of North America v 26 p 483, Dioscorea floridana
  4. ^ BONAP (Biota of North America Project) floristic synthesis, Dioscorea floridana
  5. ^ Bartlett, Harley Harris. 1910. U. S. department of agriculture. Bureau of plant industry. Bulletin. 189: 18.
  6. ^ Wunderlin, R. P. 1998. Guide to the Vascular Plants of Florida i–x, 1–806. University Press of Florida, Gainesville.
  7. ^ Knuth, Reinhard Gustav Paul. 1924. Das Pflanzenreich IV, 43: 173.
  8. ^ Ahles, Harry E. 1964. Journal of the Elisha Mitchell Scientific Society 80(2): 172.
  9. ^ Weakley, A.S. 2020. Flora of the Southeastern United States. Edition of 20 October 2020. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
  10. ^ "USDA Plants Database". plants.usda.gov. Retrieved 2025-08-27.