Vireya Rhododendron: 'Toyama Yellow'

Flower vivid yellow with a strong orange-yellow center, unmarked, color deepens as flower matures, tubular-funnel shaped, 4.2" across, flat-edged lobes, moderately scented.  Open, dome-shaped truss holds 6 flowers.  Blooms about four times per year.  Leaves elliptic, acuminate apex, rounded base, upcurved margins, 4¾" long, semi-glossy, moderate olive green.  Grows to a height of about 4 ft. in 5 years.  Plant hardy to at least 40°F (4°C).