Erect shrub to 30 cm high. Branches terete, grey; branchlets reddish. Leaves acute, 9–14 mm long, 2–3 mm wide, dark-green or glaucous, the surface densely dotted giving leaf edges a denticulate appearance; keel sharply acute. Flowers yellow, 4–5 cm diam.; pedicels 9–21 mm long.
Plants erect, rarely rooting at nodes. Erect shrublet to 20 cm. Leaves fused basally, compressed-trigonous, rough, grey pruinose, 15-30 mm long. Flowers stalked, solitary, golden-yellow to lemon-yellow, rarely cream-coloured, to 30 mm diam.