The shrub can reach up to 4 m. The leaves are square-shaped, and the large
heart-shaped flowers can reach up to 30 cm. It is cultivated as an ornamental plant, in particular for its bright red flowers.
^Friedmann, F. (1994). Flore des Seychelles Dicotylédones: 1-663. ORSTOM éditions.
^Mabberley, D.J. & De Kok, R.P.J. (2004). Labiatae. Flore de la Nouvelle-Calédonie et Dépendances 25: 20-141. Muséum National d'Histoire Naturelle, Paris.
^Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo , ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.
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^Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies. Smithsonian Contributions to Botany 98: 1-1192.