Citation:
"The skin isn't great but...The Heart is Pure Gold"
by David Karp
"Fruit Gardener" magazine, May & June 2004,
vol. 36, #3, p. 8-11, 25
Published by Californian Rare Fruit Growers

From p. 25:

"The Hass [avocado] dynasty might thus seem set to continue indefinitely,
but in San Luis Obispo County [california], at the northern end of the
avocado's [commercial cultivation] range, a potential usurper looms:

a large, completely seedless avocado,

discovered by Jack Gibson on a surfing trip to Costa Rica.He and his partners
patented the prodigy as "Fruta de Oro" and are hoping for their first crop
this year. The time may be ripe, since there aren't any giant ground sloths
around anymore to disperse avocado seeds."

Comment:
Avocados are in 3 races: Mexican, Guatemalan, West Indian. The description of
the seedless avocado (as large) rules out the Mexican race. If it is
Guatemalan, it could do well in the cool Californian climate. If it
is West Indian -- those are very tropical; they grow well in Florida
but California is too cold for them to thrive.

Tom Billings