University of California, Riverside
College of Natural and Agricultural Sciences
UCR Citrus Variety Collection - Home
UCR Home UCR Web Sites



Sampson tangelo

Citrus tangelo J.W. Ingram & H.E. Moore

CRC 2418

PI 539698

VI 201 (No longer available)



Photos by David Karp and Toni Siebert, CVC. Photo rights.  


Source: Received as a tree from Gordon Wallace, Nurseryman, 1933.


Parentage/origins: Sampson is a grapefruit and Dancy tangerine hybrid resulting from a cross made in 1897 by Swingle in Florida.


Rootstocks of accession: Carrizo citrange, C-35 citrange


Season of ripeness at Riverside: November to January


Notes and observations:

A strong vigorous Sampson tangelo seedling selected from a row of seedlings in the nursery.

Description from The Citrus Industry Vol. 1 (1967):

 " Fruit medium-sized, globose to slightly obovate; often somewhat necked; color orange-yellow; seedy.  Rind smooth, thin, relatively adherent; axis semi-hollow.  Flesh color dull orange; juicy, somewhat acid; flavor with distinctive bitterish tang.  Late-midseason in maturity.  Seeds highly polyembryonic. 
      Tree vigorous, spreading, large, and productive; leaves distinctive, cupped, and boat-like
      Sampson is a grapefruit and Dancy tangerine hybrid resulting from a cross made in 1897 by Swingle in Florida.  It was named and described by Webber and Swingle of the U.S. Department of Agriculture in 1904.  It has never attained commercial importance, except as a rootstock to a limited extent, but is still grown somewhat as an ornamental and an oddity.  "


Availability: No longer commercially available in California through the Citrus Clonal Protection Program. This accession no longer has an approved budsource. Please refer to the CCPP for information on another approved budsource or to start a reintroduction inquiry.


USDA Germplasm Resources Information Network page for Sampson tangelo





How to Support the Collection

Page created by: Center for Visual Computing
Maintained by:

UC Seal