About five to ten flowers grow in an erect spike to form a Disperis stenoplectron inflorescence.
The dorsal sepal has a pointed peak towards its back, about 1 cm tall, the margin protruding forward in somewhat pyramidal shape. Whitish lateral petal surfaces bulge below the hood margin, like underwear needing attention.
The two pendent lateral sepals are conspicuous, their broadly oblique shapes tapering to acutely pointed tips. The abrupt colour change upon each lateral sepal surface in picture indicates the location of the opening of its spur that once housed a rostellum arm when the flower was still a bud. This short, tubular to conical protrusion below the sepal typifies the Disperis genus among the orchids.
The specific name, Stenoplectron, refers to these narrow spurs on the lateral sepals of the species: steno means narrow and plectron means spur in Greek.
Flowering happens from midsummer to mid-autumn (Pooley, 1998).