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 (inset), trichomes. W1, W2, W3 and W4, wing width. W1 is left side of silicle; W2 right side of silicle; W3 upper end of silicle; and W4 peduncle end of silicle. P, seed covered by pericarp.
