Proeesscd.] (Sec p. 9.) , III this bulletin the terms" DUllcan" and "Dunclln ,•aril't.h's"refer to a type of seedy grnlwfruit usulllly n~fcrred to in commerce lIS "Florida Common."It is possillle thut most of the ~ro"es producing this typo of fruit mll~' own their origin directly or indin'etly to tho pllrent Duncan tree.Citrieultnrists generally arc ofthuopinion, howcwr, that they clime from dilTcrl'nt sourees of old, noteworthy seedling trees.'l'he Duncan type fruits and trees haye so rnllny points in cornlllon tlull, in most cases ilitTercntiation is impossible.'l'he historiy of lIluny of tllU groves is 50 obscure that the source of the bu
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Harding et al. (1945) studied this question.