The flowers of Brachycorythis conica subsp. transvaalensis grow in a dense, cylindrical raceme. In flower the plant reaches heights around 30 cm. The sepals are broad, tapering to pointed tips, the dorsal one positioned over the flower like a hood.
The lateral petals are similar to the sepals, but broad-tipped, positioned just below the gaps between the lateral sepals and the hood. These petals curve in slightly over the column. The sepals and lateral petals are white with a faint pinkish tint.
The broad, partly deflexed lip is covered in scattered, pinkish purple spots. It has a broad, shallowly three-lobed tip and an irregularly toothed margin. Flowering happens from midsummer to mid-autumn.
The species distribution is in Gauteng, the south of Limpopo and the west of Mpumalanga.
The habitat is highveld grassland. This subspecies is considered to be critically endangered in its habitat early in the twenty first century, due to the vast scale of human development on the terrain where these plants grow (iSpot; https://wildorchids.co.za).