What is the USDA Species code? You can find this 4-6 character code in your twig or leaf key, or you can find a list of them here.

Why do I have to enter my data? As part of your mission, you will help the Refuge collect many years of data so future researchers can examine long-term forest trends.

HINT - you can "Tab" between data entry fields. Click "Submit" at the bottom after you have entered ALL your data.