George Thomas Moore (1871–1956) was a U.S. botanist, who specialised in phycology, the study of algae. Year 1871 ( MDCCCLXXI) was a Common year starting on Sunday (link will display the full calendar of the Gregorian calendar (or a Common Year 1956 ( MCMLVI) was a Leap year starting on Sunday (link will display full calendar of the Gregorian calendar. The United States of America —commonly referred to as the Botany, plant science(s, phytology, or plant biology is a branch of Biology and is the scientific study of plant Life Phycology (from Greek grc φύκος phykos, "seaweed" and grc -λογία -logia) or algology (from Latin Algae ( sing. alga are a large and diverse group of simple typically Autotrophic organisms ranging from Unicellular to Multicellular forms The standard botanical author abbreviation G. Moore is applied to species he described. In Biology, a species is one of the basic units of Biological classification and a Taxonomic rank.