The arrow coralline Cheilosporum sagittatum (Lamouroux) Areschoug is a seaweed of temperate waters of Australia (from Perth, Western Australia, to Coffs Harbour, New South Wales, and around Tasmania).[2]
Arthrocardia corymbosa (Lamarck) Decaisne 1842, syn. Cheilosporum corymbosum (Lamarck) Decaisne 1842, is a red alga of South Africa (Southern Cape Peninsula eastward).[3]