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. A membranous female cone of E. californica Watson in Sect. Alatae Stapf. B. A coriaceous female cone of E. strobilacea Bunge in Sect. Asarca Stapf. C. A fleshy female cone of E. intermedia Schrenk et Mey. in Sect. Ephedra.
