The one pictured here, a dioon spinulosum, has the longest trunk of any cycad in the United States. It was collected in Mexico as an adult around the year 1900 by oil tycoon Edward Doheny. It was planted in this little park in Los Angeles in the 1950s when it was about 25 feet high. It is now about 40 feet tall.
This post is written in memory of my friend Dutch Vandervort, who shared this information with me.