Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A panicle graph superimposed on a panicle image. The circles represent the junctions and the termination of the branches. The use of colors makes it easy for users to distinguish between different types of branches (see the inset for definitions of the colors of the circles).
