"Sipman &\u00A0Aubel (1992)" . . "Sipman, H. & Aubel, R. J. M. T. (van). 1992. New Parmeliaceae (lichenes) from the Guianas and surroundings. Mycotaxon, 44: 1-12." . . . "Sipman &\u00A0Aubel (1992)" . "1992"^^ . . . "1992"^^ .