Smith, Gilbert M. 1951 The classification of algae. Smith, Gilbert 1950 Inheritance of sexuality in Chlamydomonas reinhardi. 1. Smith: Freshwater Algae of the United States; McGraw-Hill, New York (1950), with its coverage of a broad geographic region, as well as regional works such as G.W. Following and improving the classification systems introduced by Carl Linnaeus, Ernst Haeckel, Robert Whittaker, and Carl Woese, Cavalier-Smith's classification attempts to incorporate the latest developments in taxonomy. It is the largest class of algae; SMITH G.M. Smith proposed the classification of algae taking into consideration the evolutionary principles proposed by Fascher (1914). The account of algae dates back to ancient Chinese literature and it is a believe that along with the origin of plant sciences, the recognition of algae as a group has taken place. Their photosynthetic pigments are more varied than those of plants, and their cells have features not found among plants … His classification was based on such criteria as pigmentation, types of flagella, assimilatory products, thallus structure and methods of reproduction. •The current systems of classification of algae are based on the following main criteria: o kinds of photosynthetic pigments, o type or chemical nature of photosynthetic energy storage products o photosynthetic membranes’ (thylakoids) organization and other features of the chloroplasts. He classified spore producing plants into various divisions. He did not use the term algae. classification of algae was given by F.E Fritsch (1935) in his book ‘The Structure and Reproduction of the Algae’. Algae, singular alga, members of a group of predominantly aquatic photosynthetic organisms of the kingdom Protista.Algae have many types of life cycles, and they range in size from microscopic Micromonas species to giant kelps that reach 60 metres (200 feet) in length. o cell wall composition and structure. On the basis of photosynthetic pigments algae classified into three classes. Chlorophyceae (green algae) Phaeophyceae (brown algae) Rhodophyceae (red algae). These are now known to contain several quite different organisms from Euglena to … Chlorophyceae (Green algae) General characterstics of Chlorophyceae. Sexuality in Chlamydomonas 1948 Science (New York, N.Y.) SMITH … Until now, microscopists have relied on the still useful monograph by G.M. o the presence or absence of flagella (as well as the number and Examples are Chlamydomonas, Spirogyra, and Chara; Phaeophyceae – Also called as brown algae, they are predominantly marine. Algae Classification. CLASSIFICATION OF ALGAE. The biological classification system of life introduced by British zoologist Thomas Cavalier-Smith involves systematic arrangements of all life forms on earth. Manual of Phycology--an instroduction to the algae and their biology 27:13-19. Algae are usually green, but they can be found in a variety of different colours. PNAS, v.36 #4 pp.246-248. There is three main Algae classification: Chlorophyceae – These are called green algae, due to the presence of pigments chlorophyll a and b. Algae exist in environments ranging from oceans, rivers, and lakes to ponds, brackish waters, and even snow. For instance, algae living in snow contain carotenoid pigments in addition to chlorophyll, hence giving the surrounding snow a distinctive red hue. 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