Closely related to G. huillensis, but can be distinguished by the following characters:
Rhizome branched, red-brown, striate, with opposite or subopposite scale-leaves.
Petals up to 11 mm. long, the margin sometimes denticulate.
Stems erect, flattened, with longitudinal raised lines.
Male flowers with 4 fascicles each of 4–7 stamens.
Inflorescence terminal, sometimes also axillary.
Rhizomatous shrublet, 15–30 cm. high.
Fruit bright red (or orange?).
Flowers up to 20 mm. in diam.
A tree.