Citrus sinensis (L.) Osbeck
Has not been planted in the CVC yet.
Selection of 'Thomson' navel from Rocky Hill, Lindcove, California. 'Thomson' originated as a limbsport of 'Parent Washington' at the ranch of AC Thomson in Duarte, California in 1891.
Rootstocks of accession
Carrizo citrange, C-35 citrange
Season of ripeness at Riverside
November to January
Notes and observations
''Thomson Improved' and 'Thomson' are synonyms. 'Thomson' is a selection of 'Parent Washington' that differs in being earlier than 'PW', however with fruit that do not hang well and do not color as well as 'PW'. The tree is also less vigorous than 'PW'. (The Citrus Industry, 1967, 1:483). This selection is supposed to be earlier maturing with good color and production than the original 'Thomson'.