The flowers of N. fruticans may be pink, lilac, mauve or white. The flowers are two-lipped. The upper lip has four oblong lobes with rounded tips, resembling short fat fingers. There are dark, narrow, vertical lines from the base of the upper lip. The lower, two-lobed lip has bright yellow markings at the base on two oblong mounds. This lip has an irregularly rounded margin that may be partly curved under. The almost cylindrical spur at the back of the flower points obliquely downwards and tapers slightly towards its tip. It becomes about 4 mm long.