The Clementine variety was introduced into the United States in 1909 and brought to California from Florida in 1914 by H. S. Fawcett of the Citrus Research Center, Riverside. Evidently another independent introduction was made, since the 1914-15 catalogue of the Fancher Creek Nurseries of Fresno, California, mentions a new early mandarin from Algeria which later proved to be indistinguishable from Clementine." http://idtools.org/id/citrus/citrusid/factsheet.php?name=Mandarins+(Clementine)
Received as budwood from Dr. Fawcett's #134, Florida collection, 1914.... Since Clementine is monoembryonic, it must have been imported as budwood; therefore it follows that probably all of Dr. Fawcett's 1914 imports came in as budwood. http://www.citrusvariety.ucr.edu/citrus/algerian.html