44 . EXPERIMETTT STATION RECORD. 



S. R., 13, p. 555). The figures given show that Milton and Newman are easiest to 

 propagate, and Bavay, a variety substituted this year for Green Gage of the Domes- 

 tica group, used last year, hardest to propagate. Chabot made the largest and cleanest 

 trees. The highest percentage of merchantable trees and trees making the best 

 average growth were produced on Marianna stock, though the largest number of 

 trees was made on Wayland stock. Trees produced on Americana roots appeared to 

 be stockier than on any of the other roots. 



The growth of 4 varieties of Japanese plums, 23 of Americana, 4 of Nigra, 8 of 

 Miner, 6 of Wildgoose, 9 of Chicasaw, 2 of sand plums, 2 of Myrolialan, 1 of Peach, 

 and 11 of liybrid plums on Americana stocks during the past year from whip grafts 

 has been made a special stu<ly, and the measurements secured are tabulated. The 

 growth made on this stock seems, on the whole, to be satisfactory from the stand- 

 point of the nurseryman. 



As recorded in the report of the station for 1900, 3 of the best trees from each of 

 the lots of plums propagated on the 4 different stocks — Americana, Wayland type, 

 Marianna, and Peach, as noted above — were planted out in the permanent orchard. 

 Data on the growth of these trees on each of the different stocks in 1901 are recorded. 

 They agree in general with those obtained during the season of 1900 (E. S. R., 13, 

 p. 555). Trees of Milton on Wayland roots made an upright, narrow, vase form, 

 with relatively few liranches; while on Marianna roots they were low, round-headed, 

 and bushy, with spreading and drooping tojis. The leaves of the trees on Marianna 

 stocks Avere also several shades darker than on Wayland roots, and the twigs were 

 dark red instead of green. This difference in the growth of the tree on these two 

 different stocks is stated l)y the writer as being one of the most striking instances 

 of the influence of stock on scion which he has ever observed. The growth of the 

 trees on the different stocks the second year in the orchard indicated that Peach 

 stock should be entirely discarded 1)y planters having cliinatic and soil conditions 

 like those of the station. At the present time, the experiments would seem to indi- 

 cate that ' ' jNIarianna is the l)est all-round stock from the standpoint of the orchardist — 

 though not from the standp<iint of the nurseryman — but that Americana is j^robably 

 much l)ettei- for Americanas." 



Hybrid plums — third report, F. A. Waugh ( Verm.fmt Sta. Rpt. 1001, pp. 269- 

 277). — Earlier reports have dealt with the hybrid parentage of plums (E. S. R., 12, 

 p. 239), including descriptions of a number of varieties. In the present work 

 descriptive notes are given on 13 new hybrid varieties, some of which have not yet 

 been put upon the market, and further notes added on 10 old varieties. 



The class of hybrid jjlums which claims the Japanese plum [PrunuA iri flora) as a 

 parent on the one side, and either the Wildgoose plum (P. hortuhina) or Chicasaw 

 plum (P. angnslifnlln) on the other, has l)een classified by the author under the name 

 of the Gonzales group, after the variety of this name. The Gonzales variety is 

 believed to come nearer being representative of this grouj) in form of tree, habit of 

 growth, character of fruit and foliage, than any other variety in the group. "This 

 hybrid group now numbers so many promising horticultural varieties, it presents so 

 many good qualities, it offers so many encouraging possibilities as a point of depar- 

 ture for further hybridization, and it is otherwise so important in general interest 

 that it seems necessary to give it more careful consideration. The group is equally 

 well marked as the Wildgoose grouji, and it already contains more promising varie- 

 ties. From every horticultural point of view it is more important than the Wild- 

 goose group. These reasons seem to justify us in describing it liy itself and giving 

 it a separate name." The group is described as a botanical variety of the Wildgoose 

 plum and given the name of P. liortulana robusta. 



The following varieties are included by the author within this group: Alabama, 

 America, Biconical, Breck, Daisy, Dora, Eggles, Excelsior, Franklin, Georgia, Golden, 

 Gonzales, Govalle, Halcyon, Juicy, Kelsaw, Lannix, Louisiana, Minnie, Monolith, 

 Nona, Preserver, Ragland, Red May, Ruby, Satin, Scribner, Watson, Waugh, and 

 Yates. 



