Cladistics was an upgrade to this man's classification system.
This inventor of the index card fixed the Celsius thermometer by making 0 degrees the melting point of water. This man divided humanity into four races depending on skin color. He had seventeen students called his "apostles" at Üppsala, who travelled around the world to take plant samples for his enormous collection. This author of Systema Naturae (*) classified plants based on how many stamens and how many pistils they have. Cladistics was an upgrade to this man's classification system. He popularized binomial nomenclature. For 10 points, name this Swedish botanist who invented the kingdom-phylum system of taxonomy.
This inventor of the index card fixed the Celsius thermometer by making 0 degrees the melting point of water.
Carolus Linnaeus [or Carl Linnaeus]