654 Angewandte Botanik. 



tral Texas are thought to be the most promising source of hardiness. 



Three, with a possible additional two, selections have been 

 made from the Texas region vvhich are considered very promising, 

 and which have been succesfuUy crossed with the tender spineless 

 species. 



The selections already made have resulted in the production 

 of forms of native hardy species which are entirely devoid of spines, 

 and which remain spineless under cultivation. These forms are also 

 as rapid of growth as the spiny natives of the Texas region. 



M. J. Sirks (Haarlem). 



Hume, H. H., A Kaki Classification. (Journ, of Heredity. V. 

 p. 400—406. 1914.) 



In searching about for a basis of Classification, rendered neces- 

 sary by the very large introductions of new varieties from China, 

 Japan, Algeria, France and elsewhere, as well as by the 

 bringing together of all varieties now in America, it has tinally 

 been decided that the flesh characters upon which the first Ameri- 

 can Classification (1904) was based form a satisfactory basis of Clas- 

 sification if applied in their proper significance. In the final analj^sis 

 the flesh characters are fixed by the poUination factor and this 

 factor finds its most striking expression in the color and texture of 

 the flesh. 



Based on the difference in flesh coloration under influence of 

 pollination, Diospyros Kaki, may be divided into at least two groups: 

 first those which show no change in color of flesh under the influ- 

 ence of pollination and second, those in which the flesh of the fruit 

 is darkened under the influence of pollination. Since the change in 

 color in the one case is directly due to pollination and in the other 

 pollination has no effect whatever, the author refers to those varie- 

 ties which undergo no change in color as Pollination Constants 

 and those which are light colored when seedless and dark colored 

 when seedy, the writer calls Pollination Variants. If varieties 

 which are constantly dark fleshed whether seedy or seedless should 

 be found, the group of Pollination Constants can then be divided 

 into two groups of light and dark fleshed Pollination Constants. It 

 is hardly probable, that there are varieties which are dark fleshed 

 when seedless and light fleshed when seed5% but if any such should 

 be discovered, a similar plan can be foUowed by dividing the group 

 of Pollination Variants. 



To the group I (Pollination Constants) the varieties belong: 

 Costata, Hachiya, Lienhua, New Sien, Ormond, Phelps Siang, Ta- 

 mopan , Tanenashi , Triumph , Tsuru ; to that of Pollinations Variants: 

 Dai Dai Maru, Gailey, Godbey, Hyakume, Lonestar, Masugata, 

 Myotan, Nectar, Okame, Taber n^. 23, Taber n». 129, Yeddoichi, 

 Yemon, Zengi. 



Another Kaki-classification can be founded on the differences 

 in flowering habit: some of them bearing staminate flowers regu- 

 larly every time the tree blooms, while other varieties produce 

 them one season and not another, in fact are very irregulär in this 

 particular. The first class of staminate trees the writer designated 

 as Staminate Constants, while the second class of staminate 

 trees may be called Staminate Sporadics. Those which produce 

 only pistillate flowers may be referred to as Pistillate Constants. 

 It is interesting to note that staminate flowering varieties of both 



