Begonia Masoniana.

Flowers are an optional extra when your leaves are this stunning.

Heavily armoured buds.

Clusters of flowers arranged in cymes.

Pendant clusters growing from a leaf node with a central male flower and lateral female flowers

The first terminal flower is staminate and subsequent flowers are also male. The very last level of flowers to open will be pistillate or female. I was completely ignorant of cyme structure till I read about it a few minutes ago. Biologists and botanists have a whole dictionary to themselves.

A thick carpet of translucent trichomes.

Singular translucent trichomes attached to polygonal epidermal cells. They help protect against damage from UV light, pathogen attack, and excess transpiration,