Yellow Alder

Turnera ulmifolia

"Turnera ulmifolia", the ramgoat dashalong 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".
Yellow Alder taken at kowloon park hong kong Fall,Geotagged,Hong Kong,Turnera ulmifolia,Yellow Alder

Appearance

The plant grows erect, with dark toothed leaves and small, yellow-orange flowers.

They are often found as a weed growing on roadsides.

References:

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderMalpighiales
FamilyTurneraceae
GenusTurnera
SpeciesT. ulmifolia