• Cavaco, A. 1971. Remarques sur quelques Pyrostria (Rubiacees-Vangueriees) de Madagascar. Adansonia, n.s. 11(2): 393–396.
• Cavaco, A. 1967 [1968]. Especes nouvelles de Rubiacées de Madagascar. Bull. Mus. Natl. Hist. Nat., sér. 2 39(5): 1015–1019.
• Lantz, H. K., J. Razafimandimbison, S. Mouly & A. Mouly. 2007. Three new species of Vanguerieae (Rubiaceae) from Madagascar. Adansonia, sér. 3, 29(1): 129–136.
• Bridson, D. M. 1987. Studies in African Rubiaceae-Vanguerieae: a new circumscription of Pyrostria and a new subgenus, Canthium subgenus Bullockia. Kew Bull. 43(3): 611–639.
• Razafimandimbison. 2007. New Combinations and Names in Peponidium and Pyrostria (Rubiaceae, Vanguerieae). Novon 17: 516–521.
• Cavaco, A. 1967. Notes sur quelques Vanguériées (Rubiaceae). Adansonia, n.s. 7(3): 357–361.
• Davis, A. P., R. H. A. Govaerts & D.M. Bridson. 2007. New combinations in Madagascan Vanguerieae (Rubiaceae) for the genera Psydrax, Pyrostria, and Rytigynia. Blumea 52(1): 139–145.

Our evaluation is based on the comments of Razafimandimbison et al. (2007).

Pyrostria sect. Involucratae Cavaco is a synonym of Pyrostria Comm. ex. Juss.