The flowers of Dioscorea sylvatica are dioecious, meaning the sexes are on separate plants. The small, yellow-green or yellow flowers grow spaced in spikes. The male spikes are erect, the female ones pendulous, these more or less erect.
The perianths have six segments in two whorls of three, the male flowers six-lobed with six stamens. Female flowers have six free segments over the inferior, three-locular ovary topped by three short styles.
Flowering happens from late spring to after midautumn.
The fruits are three-valved capsules coloured yellow green, the edges red brown (Smith, et al, 2017; Leistner, (Ed.), 2000; Pooley, 1998; Bond and Goldblatt, 1984; iNaturalist).