Polygala myrtifolia var. pinifolia bears narrow leaves, the margins rolled under slightly. The photo shows narrow leaves and distinct vein lines across the floral parts and the crests white.
The plant is similar to P. teretifolia also found in the Little Karoo. P. scabra has narrow but hairy and channelled leaves (Vlok and Schutte-Vlok, 2015; Manning, 2007; iNaturalist).