Erica conica

Erect, branching shrub to 0.5m tall, flowering VI-IX in wild. Leaves erect, curving inwards in whorls of 4-6. Conical flowers 6-12mm long, borne in leaf axils on upper parts of shoots in dense spike-like clusters, red to deep purple-pink, with dark anthers without awns not projecting from corolla mouth.
Found on Cape Peninsula only.

Sources:

Ericas of South Africa (D.Schumann, G. Kirsten & E. G. H. Oliver) 1992: p. 47
Erica of the Cape Peninsula (Inge Oliver & Ted Oliver) 2000: no. 10