The resupinate flowers of Angraecum sacciferum grow in several separate inflorescences on short scapes, about five flowers in a raceme. The sepals are oblong to ovate, tapering to acutely pointed tips that may be slightly reflexed; the median sepal above slightly bigger than the lateral pair. The petals are flat, narrowly lance-shaped with acute tips. Sepals and petals are lime-green to greenish yellow, their blades translucent with large, fleshy cells. The lip is deeply concave to helmet-shaped with incurved margins that taper to a notably pointed tip.
Flowering happens in summer into autumn (Liltved and Johnson, 2012).