ABSTRACT:
de Granville, J. J., 1978. Recherches sur la flore et la vegetation Guyanaises, Th~se, Academie de Montpellier, 272 pp. Blanc~ P., 1978 Aspects de la ramification ches des Aracees tropiacles, These, L'Universite Peirre et Marie Curie, Paris. and Treiber, M.,1980. Biosystematics of the Arisema triphyllum complex. Thesis; Univ. of North Carolina, Chapel Hill, 357 pp. are reviewed.