Cycads

The U.S. Botanic Garden in Washington is a living plant museum, filled with the colors and scents of some 65,000 plants. In its greenhouse and outdoor gardens are orchids, cacti and succulents, carnivorous plants, bromeliads, cycads and ferns. And for much of this year, more than 75 paintings, photographs and illustrations showcasing key flora from America's national parks are on display, too.