Possibly Dracaena concinna Kunth., from Madagasdcar.  An evergreen shrub with lance-shaped green leaves, to 90cm, margined with red.  To 2m.  [RHSD, Hortus].  another possibility is Dracaena deremensis Engl., from Tropical East Africa.  A spreading shrub with leaves to 70cm, usually variegated in cultivated plants, of which there are many varieties, and terminal panicles of dark red flowers in clusters of 20-30.  To 4.5m.  [RHSD, Hortus].