spiralis (J. Agardh) Papenfuss (Rottnest Island, Western Australia, to Flinders, Victoria.) Sydney fanweed Zonaria diesingiana J. Agardh (Green Cape to Coffs Harbour, New South Wales.) Peacockweed Lobophora variegata (Lamouroux) Womersley (Around Australia. Also widespread overseas.) Southern peacockweed Distromium flabellatum Womersley (Houtman Abrolhos, Western Australia, to Sydney, New South Wales, and northern and eastern Tasmania.) Banded fanweed Stypopodium flabelliforme Weber-van Bosse (Tropical Australia south to Rottnest Island, Western Australia, and Jervis Bay, New South Wales. Also Lord Howe Island, and widespread in the Indo-West Pacific region.) Split fanweed Taonia australasica J. Agardh (Kangaroo Island, South Australia, to Coffs Harbour, New South Wales. Also Lord Howe Island.) Family Sporochnaceae Stackhouse's seaweed Carpomitra costata (Stackhouse) Batters (Kangaroo Island, South Australia, to Port Stephens (New South Wales), and around Tasmania. Also widely distributed overseas.) Common tuftweed Sporochnus comosus C. Agardh (Dongara, Western Australia, to Calliope River, Queensland, and around Tasmania.) Open tuftweed Sporochnus radiciformis Turner (C. Agardh) (Rottnest Island, Western Australia, to Botany Bay, New South Wales, and around Tasmania.) Spiky tuftweed Perithalia caudata (Labillardière) Womersley (West Bay, Kangaroo Island, South Australia, to Wilsons Promontory, Victoria, and around Tasmania.) Clifton's tuftweed Encyothalia cliftonii Harvey (Kalbarri, Western Australia, to Walkerville, Victoria.) Chimney-brush seaweed Bellotia eriophorum Harvey (Ceduna, South Australia, to Walkerville, Victoria, and around Tasmania. Also Noosa, Queensland.) Family Scytosiphonaceae Tubular stringweed Scytosiphon lomentaria (Lyngbye) Link (Cottesloe, Western Australia, to Sydney, New South Wales, and around Tasmania. Also widely distributed overseas.) Lace ballweed Hydroclathrus clathratus (C. Agardh) Howe (Around Australian mainland. Also widely distributed overseas.) Sinuous ballweed Colpomenia sinuosa (Mertens ex Roth) Derbes & Solier (Widespread around Australia and overseas.) Smooth ballweed Colpomenia peregrina (Sauvageau) Hamel (Albany, Western Australia, to Heron Island, Queensland, and around Tasmania. Also widely distributed overseas.) Family Punctariaceae Bulbous ballweed Asperococcus bullosus Lamouroux (Rottnest Island, Western Australia, to Port Stephens (New South Wales), and around Tasmania. Also widely distributed overseas.) Family Lessoniaceae Strapweed Lessonia corrugata Lucas (Phillip Island, Victoria, and around Tasmania.) Giant kelp Macrocystis pyrifera (Linnaeus) C. Agardh (Eastern, southern and western Tasmania. Also New Zealand, subantarctic islands, South America and the Pacific coast of North America.) Northern giant kelp, string kelp Macrocystis angustifolia Bory (Cape Jaffa, South Australia, to Walkerville, Victoria, and northern Tasmania. Also South Africa.) Family Alariaceae Common kelp Ecklonia radiata (C. Agardh) J. Agardh (Kalbarri, Western Australia, to Caloundra, Queensland, and around Tasmania.) Japanese kelp Undaria pinnatifida (Harvey) Suringar (Port Phillip Bay, Victoria, and D’Entrecasteaux Channel