007018 01 Nature Microbe Bacteria Alga Algae America American Artifact Blue Building Buildings Cambridge Characteristic Color Colour Concept Diatom Diatoma Diatoms Earth Evolution Farlow Herbarium Flora Fossil Freshwater Algae Harvard Harvard University Lab Laboratory Location Lyrella Lyrella Lyra Marine Algae Massachusetts Microbe Microbes Microscopic Mineral Nature North America North American Object Organism Pattern Patterns Physical Matter Plant Plants Plantae Red Shape Shapes Silica Silicon Silicon Dioxide Specimen Structure Subject Substance Unicellular United States University US USA Vegetation Frans Lanting Frans Lanting Frans Lanting Ph MIC 015 © Frans Lanting Frans Lanting Photography Diatom Lyrella lyra Farlow Herbarium Harvard University