Colli‐Silva, Matheus, Pirani, José Rubens, and Dorr, Laurence J. 2023. "(2950) Proposal to conserve the name Cacao sylvestris (Theobroma sylvestre) (Malvaceae: Byttnerioideae) with a conserved type." Taxon, 72, (2) 438–440. https://doi.org/10.1002/tax.12925.
Province Fianarantsoa. R.N. 25 (road from Fiarantsoa to Mananjay, E of Ifanadiana) and 2.3 km W of Ambohirafia., Vatovavy Fitovinany, Madagascar, Africa
Dorr, Laurence J. 2009. "Chimaphila, Orthilia, and Pyrola (Ericaceae)." In Flora Mesoamericana. Vol. 4, pt. 1. Cucurbitaceae a Polemoniaceae. Davidse, Gerrit, Sousa S., Mario, Knapp, Sandra, and Chiang, Fernando, editors. 414–416. Ciudad Universitaria, Mexico: Universidad Nacional Autonoma de Mexico (UNAM).