It was shot using Agfacolor, and the credits of the film are placed before a backdrop of painted fronds instead of the sackcloth used in Ozu's films since A Story of Floating Weeds in 1934.
William Stein, associate professor of biological sciences at Binghamton University and colleagues at the New York State Museum in Albany, NY and Cardiff University in the United Kingdom have found an intact tree more than 26 feet tall with a system of frond-like, but leafless branches resulting in a superficially tree fern or palm tree-like form.
The fronds of R. adiantiformis contain round sori (reproductive clusters) on the underside of the pinnae (leaflets) unlike many other ferns which have separate specialized reproductive fronds.