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).

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.