Turnera ulmifolia

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Turnera ulmifolia
Turnera ulmifolia 01.JPG
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Passifloraceae
Genus: Turnera
T. ulmifolia
Binomial name
Turnera ulmifolia

Turnera ulmifolia, the ramgoat dashalong[1] or yellow alder, is a species of plant of family Passifloraceae, native to Mexico and the West Indies. A recent study found that yellow alder potentiated the antibiotic activity against methicillin—resistant Staphylococcus aureus (MRSA).[2]


Turnera ulmifolia grows erect, with dark toothed leaves and small, yellow-orange flowers, and is often found as a weed growing on roadsides.

This plant is commonly misidentified with the closely related T. diffusa in horticultural commerce, causing it to be often misrepresented as "Damiana."[3][4][5]


  1. ^ "Turnera ulmifolia". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 12 December 2015.
  2. ^ Coutinho, Henrique DM; Costa, José GM; Lima, Edeltrudes O; Falcão-Silva, Vivyanne S; Siqueira Júnior, José P (2009). "Herbal therapy associated with antibiotic therapy: potentiation of the antibiotic activity against methicillin – resistant Staphylococcus aureus by Turnera ulmifolia L". BMC Complementary and Alternative Medicine. 9 (1): 13. doi:10.1186/1472-6882-9-13. ISSN 1472-6882. PMC 2685411. PMID 19426487. open access
  3. ^ Joshi, V.C.; Rao, A.S.; Wang, Y.H.; Avula, B.; Khan, I.A. (March 2009). "Taxonomic Clarification on Turnera diffusa Ward and its Demarcation from "False Damiana" using Fluorescence, Scanning Electron Microscopy, HPTLC and UPLC". Planta Medica. 75 (04). doi:10.1055/s-2009-1216454. Retrieved 7 September 2016.
  4. ^ "Damiana - Turnera diffusa, Turnera ulmifolia seed pictures". shroomery.org. Retrieved 7 September 2016.
  5. ^ "Turnera diffusa var diffusa or var aphrodisiaca or what?". National Gardening Association. Retrieved 7 September 2016.