262 Bulletin 70. 



more than a foot. This habit is common upon the plains of 

 Nebraska, I judge, from Professor Bessey's accounts, although 

 plants which I have grown from seeds which he has furnished me 

 from several places in that State, are more erect and are not dis- 

 tinguishable from the bushy form introduced from Colorado by 

 Mr. Pennock. But old plants become more diffuse or even pros- 

 trate and may eventually cover a space of ground several feet 

 across, the illustration upon the title-page shows one of my 

 seedlings, natural size, grown from seeds from Brown County, 

 Nebraska. Fig. 2, in Plate I, is the Improved Dwarf Rocky 

 Mountain cherry, of Pennock, natural size. This latter plant is 

 the only named variety of the species in cultivation, so far as I 

 know. This variety was grown from seeds obtained upon the 

 Cache la Poudre River, Colorado.* Plants were set at Ithaca in 

 1892, and in 1893 and 1894 they bore full crops. The cherries 

 ripen along with the sand cherry {Pnoiiis pinnila), and they 

 generally have a tender pulp and pleasant aromatic flavor ; but 

 one of our plants bears fruit with a very astringent skin. As 

 soon as larger-fruited varieties shall appear, this cherry must 

 attract the attention of planters. It is hardy and vigorous, and 

 seems to be very productive. Professor S. B. Green, of the Min- 

 nesota Experiment Station, writes that he has "raised probably 

 five thousand seedlings in the last four years and has seen many 

 seedlings on the grounds of the Jewell Nursery Co., at Lake City, 

 Minn. Among these I have seen many that produced ver}' good 

 fruit, but I have not yet selected the one which I shall propagate. 

 I have attempted quite a number of hybrids between it and 

 Primus Americana but have so iar failed to get one that I felt 

 sure represented both species. It is a very good stock for the 

 P, Americana. It suckers very freely the first season but when 

 the graft or bud gets a good start there is but little trouble from 

 this cause. The Russian cherries bud on it fairly well, but do 

 poorly when grafted. I think the round fruits are much more 

 often of good quality than those having a pointed apex." 



3. Utah Hybrid Cherry. — The third dwarf cherry is that known 

 as the Utah Hybrid, the origin and botanical characters of which 



■ For fuller history, see Bull. 38, p. 60. 



