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!
A grain, such as for grasses; a dry, indeshiscent fruit that has developed from one flower having a single ovary, where the seed coat is fused to the ovary wall.