The flowers of Flueggea leucopyrus are grouped in axillary clusters (few-flowered cymes).
The flowers of Flueggea leucopyrus are unisexual (male and female flowers separated on the same individual).
The male flowers have a 3-4 mm pedicel and 5 tepals. The tepals are ovate, 1 cm long and 0.7 cm wide and yellowish-coloured.
The androecium is composed of 5 stamens. The filaments are 1.5 cm with small and globose anthers.
The female flowers have 5 ovate and 0.8 mm long tepals.
The styles are 0.7 mm long, connate at the base and with bifid stigmas. The ovary is ovoid, 0.5 cm across and 2-3-celled.
The flowers are fragrant.