Mascagnia macroptera is an evergreen vine from Baja California that will
easily train itself to a trellis or fence. If left unsupported, this
plant will twine on itself to produce a mounding shrub or even a
groundcover. This blooms in spring and summer, with bright yellow
orchid-shaped flowers. This is fairly drought tolerant shrub, but looks
much better with regular watering through the warm season. Zone 9.