The small white flowers of Angraecum pusillum grow in several inflorescences from the stem below the leaves. Pusillus means very small in Latin, referring to the flowers.

About 14 flowers may grow in one laxly flowered raceme, individual flowers reaching a diameter of 4 mm. The flowers are non-resupinate. The lip (positioned at the top of the flower) is helmet-shaped with incurving margins that taper to an acutely pointed tip. The sepals are nearly equal, narrowly lace-shaped to oblong with reflexed tips. The lateral petals are shorter than the sepals, tapering to acute tips and reflexed.

The small spur is pouch-shaped; a little nectar is sometimes found in it, indicating pollinator involvement, while self-pollination is also a possibility.

Flowering happens from spring to early autumn, sometimes all year round.

Forms that vary in size and flowering time have been observed (Liltved and Johnson, 2012; Pooley, 1998).