Note 171 — Chapter XXVII

Dr. J. D. Hooker has divided the marine vegetation into ten provinces:—the Northern Ocean, from the pole to the 60th parallel of north latitude;—the North Atlantic, between the 60th and 40th parallels, which is the province of the delessariæ and fucus proper;—the Mediterranean, which is a sub-region of the warmer temperate zone of the Atlantic, lying between the 40th and 23d northern parallels;—the tropical Atlantic, in which sargassum, rhodomelia, corallinia, and siphinea abound;—the antarctic American region, from Chile to Cape Horn, the Falkland Islands, and the whole circumpolar ocean south of the 50th southern parallel;—the Australian and New Zealand province, which is very peculiar, being characterized, among other generic forms, by cystoseiriæ and fuceæ;—the Indian Ocean and the Red Sea;—and the last, which comprises the Japan and China Seas. There are several undetermined botanical marine provinces in the Pacific and elsewhere.