The leaves are arranged in whorls of three to six, lanceolate to
obovate or elliptic in shape, **0 cm (**0 in) long and **3 cm (*5
in) broad, with an entire or spiny-serrated margin. The flowers are
produced in a long, slender, simple raceme **0 cm (**0 in) long,
the individual flowers ***5 mm (0.*0.6 in) long, white to pink or
purple, with four tepals. The fruit is a hard, woody, globose
follicle with a pointed apex, containing one or two seeds.