The list of seaweeds and marine flowering plants of Australia (temperate waters) is a list of marine species that form a part of the flora of Australia. The geographical range is from Perth, Western Australia to New South Wales, and those tropical species which are also found in this range may also be listed here.. Also widely distributed overseas.) Family Chordariaceae * Brown spaghetti weed (Harvey) Kylin (Safety Bay, Western Australia, to Nowra, New South Wales, and around Tasmania. Also widely distributed overseas.) Family Splachnidiaceae Family Family Cladostephaceae Family Dictyotaceae Family