This book introduces you to a well known group of plants, from bright sunflowers to beautiful magnolia trees. It explores the history of flowering plants and examines the way flowering plants reproduce and obtain energy. It also looks at the various uses for flowering plants, including decoration and agriculture. Did You Know? Flowering plants make up about 90 percent of the species in the plant kingdom. The largest flowering plant, the Amorphophallus titanium, can grow to 12 feet (3.7 meters) long. There are about 250,000 species of flowering plants.