Seen from the side, this cream coloured Disa sagittalis flower displays the lateral and downward curving of the lobes of the dorsal sepal over the rest of the flower. The slender, pale green spur at the back end of the dorsal sepal is straight, while angled down over the ovary.
Blackish purple dots are visible along the sides of the erect, oblong petals. Similar dots occur on the forwardly protruding lip that also has a dark line down its centre. The margins of the lip are curved up near its pointed tip.
The lateral sepals, oblong to slightly obovate in shape, have indentations near their tips over a keel-like point below; their tips being nearly truncate. The lip of D. sagittalis becomes from 5 mm to 1 cm long.
Flowering happens in spring into early summer. The distribution straddles winter and summer rainfall areas and also has variability in temperature ranges across the region. This may affect the growth and flowering seasons somewhat.
Flowers in the George area sometimes exude a faint musty scent. Pollination details of this plant still remain largely to be discovered, but certain hoverflies have been found active among the flowers (Liltved and Johnson, 2012; Pooley, 1998).