''Turnera ulmifolia'', the ramgoat dashalong or yellow alder, is a species of
plant
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclud ...
of family
Passifloraceae
The Passifloraceae are a family of flowering plants, containing about 750 species classified in around 27 genera.
They include trees, shrubs, lianas, and climbing plants, and are mostly found in tropical regions. The family takes its name from ...
, native to
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
and the
West Indies
The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater A ...
. A recent study found that yellow alder potentiated the
antibiotic
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of ...
activity against methicillin-resistant ''Staphylococcus aureus'' (
MRSA
Methicillin-resistant ''Staphylococcus aureus'' (MRSA) is a group of Gram-positive bacteria that are genetically distinct from other strains of ''Staphylococcus aureus''. MRSA is responsible for several difficult-to-treat infections in humans. ...
).
[ ]
Description
''Turnera ulmifolia'' grows erect, with dark toothed leaves and small, yellow-orange flowers, and is often found as a weed growing on roadsides. These yellow flowers bloom around 6:00 am and wilt around 11:30 AM. Life span for flower is around 6 hours. These plants can survive on minimum water and grow on walls, cement blocks, and rocks. Tawny Coster (Acraea terpsicore) butterfly larvae feed on these plants.
This plant is commonly misidentified with the closely related
''T. diffusa'' in horticultural commerce, causing it to be often misrepresented as "Damiana."
References
ulmifolia
Plants described in 1753
Taxa named by Carl Linnaeus
{{Passifloraceae-stub