Standard sour orange 

Citrus aurantium L.  

CRC 628

PI 539176

Photos by David Karp, CVC, 3/3/2008. Photo rights.  

Source: Received as budwood from Murphy Oil Co. nursery, Whittier, CA, 1914.

Parentage/origins: Parents unknown

Rootstocks of accession: Carrizo citrange, C-35 citrange

Season of ripeness at Riverside: January to March

Notes and observations: 

12/1939, HJW: Selected as most typical and normal type of the sour orange. This in the rootstock experiment and elsewhere referred to as the Standard sour which becomes the variety name. Buds selected by Webber Mertz & Thomas. 

12/24/1988, EMN: Fruit is a typical sour orange.  

Availability: Not commercially available in California. 

USDA Germplasm Resources Information Network page for Standard sour orange