This is a complex vandaceous hybrid Perreiraara (Prra) = [Aerides x Rhyncostylis x Vanda] x Ascocenda = [Ascocentrum x Vanda]. This makes it a 'quadrigeneric' cross? The blooms are about 1 3/4in (4cm) and the base colour is chartreuse .The plant is about 6in (15cm) tall and this is the 4th blooming.