Special acknowledgement is made to Carlos Gomez Pitera, Instituto Nacional de lnues-tigaciones
Agrarias, for furnishing seed of the Spanish strains, and to Gary Reece and Elgy Kryger,
Watershed Program, Department of Agriculture, San Diego County, for assistance in
site preparation, encouragement and logistic support throughout the long evaluation
program in San Diego County.
The authors wish to acknowledge Carol Adams for statistical analysis; Robert Slayback
and Raimond F. Clary, Jr., of the US. Department of Agriculture Soil Conservation
Service, for assistance in seed increase; and Robert Koenigs, formerly with UC Cooperative
Extension in San Diego County, for sampling in early years.