Ngā Rauropi Whakaoranga

Use of blue-green alga for food described. Called Tecuitlatl, by Aztecs in Tenochtitlan (now Mexico City). Also found in particular sites in Africa (described). Identified as Spirulina platensis. In cold temperate, sub-arctic areas the edible blue-green algae are Nostoc species, in Japan Phylloderma sacrum, in Asia, Spirogyra and Oedogonium spp. In China, a seaweed called Prasiola yunnanica is found in high mountain streams. Details are given on the use of all these algae along with a chemical analysis of their nutritive value.