The flowers are yellow (male) and greenish (female) followed by greenish fruit that turns yellow to blue-black in mid-autumn. The fruit are kidney-shaped at 10-12 mm long. The photo above and below show them as they look in August.
Above is a photo of a planting of fan palms, banana plants, annual flowers and various other interesting plants in a small park opposite the Starbucks at Denman and Davie Streets in Vancouver's West End. Below is a close-up of a banana plant (Musa ssp.) in flower with fruit. Interesting, eh? Perhaps you have learned something whether you live in the Vancouver area or elsewhere.