Seaweed flora of the St. Martin’s Reef, Bangladesh

St. Martin’s Reef (SMR) about 14 km west of the Island, Teknaf, Cox’s Bazar, Bangladesh was not known during last over 50 years seaweed researches. Recent six collections made with assistance Navy revealed 8 seaweeds species which are Pterocladiella maribagoensis Boo and Geraldo, Hypnea spinella (C. Agardh) Kützing, Peyssonnelia polymorpha (Zonars.) Schmitz, Jania pumila Lamx., ungulata f. brevior (Yendo) Dawson (Rhodophyta); Caulerpa racemosa var. clavifera (Turner) Bosse, Bryopsis plumosa (Huds.) C. Ag. Halimeda tuna (Lin.) Lamx. (Chlorophyta). Of these such as et Geraldino, Dawson, Lamx have been newly recorded described from SMR in Bay Bengal (Bangladesh territory). Presence physical chemical water environments indicated it a true forming reef. The present illustrated account is however may be considered base-line information on flora new North-east coast. A total making to 215 mostly SMI nearby SMR. J. Plant Taxon. 30(1): 153-163, 2023 (June)