Visitors look and take pictures of a Titan Arum flower at Basel's Botanical Garden
Visitors take pictures of a Titan Arum (Amorphophallus titanum), one of the world's largest and rare tropical flower, at Basel's Botanical Garden April 23, 2011. The flower, which emits strong odor to attract pollinators, wilts and dies after two days. REUTERS/Christian Hartmann (SWITZERLAND - Tags: ENVIRONMENT SOCIETY)