p. 121 - 128 SUR L'ETAT DE LA VEGETATION ALGALE MACROPHYTE DU LITTORAL ROUMAIN DE LA MER NOIRE, PENDANT LA PERIODE ESTIVALE DE L'ANNEE 1977 Maria Celan 1), A.Bavaru 2) et A. Bologa 1) 1) Institute Roumain de Recherches Marines Constanta 2) Institut D'Enseignement Superieur Constanta Abstract The paper presents data regarding to the state of the Romanian Black Sea coast macrophyte algae vegetation in the 1977 summer period. Are ascertaining a resolute influence which had the belt Cystoseira disappearance on the algae vegetation evolution. Was established the total or near total disappearance of a great number of species, in the first line Laurencia. Species of the Ceramium genus arrived to impress a peculiar physiognomy to the algae vegetation.