The USA-NPN website will be temporarily unavailable for scheduled maintenance beginning late Sunday, July 26 through early Monday, July 27 (EDT). Thank you for your patience and understanding.
We are undertaking a major revision of our Nature's Notebook data collection app to make it easier and more fun to track plant and animal seasonal activity!
Leaves of a plant specifically modified for storage of energy (generally in the form of carbohydrates) or storage of water, such as the storage leaves found in bulbs