A glabrous, much branched shrub, up to 1.5m tall, with axillary spines; leaves linear-oblong, 3-9.5cm long, base cuneate, apex obtuse, midrib red above, petiole short, red;flowers in small terminal, hop-like spikes, up to 9cm long, bracts broadly ovate,1.2cm long, ciliolate, purple tinged, on the back with cupular glands, bracteoleslanceolate, 4mm long; calyx lobes broadly ovate; corolla tube 3cm long, bent at base,expanded above, lobes 5, orange-yellow, stamens 4, didynamous, 2 exserted; capsuleovoid, 2-seeded. (Indonesia)