IDENTIFICATION OF PLUM VARIETIES 51 



slightly reverse keel-folded) ;tip acute, twisted, often slightly upcurved; margin coarsely to medium- 

 waved; surface moderately rugose, slightly bullate, dull, lightly pubescent, medium gray green; 

 serrations rather coarse, shallow, sometimes double, dull serrate to crenate. 



56, Yellow Egg. Habit upright-spreading, tall, medium stout; internodes moderately long. 

 Two-year bark rather light brown, some scarfskin on older bark; one-year bark pinkish to light 

 brown; young shoots pink, slightly glaucous; pubescence trace to very light; lenticels medium in 

 number, small, flush, russet; growing tips light green to reddish tinged; young leaves light to 

 medium yellowish green. Petiole wide-angled, medium, in length, moderately thick, reddish tinged; 

 glands 1-2. very close to or on the blade, small, greenish. Leaf blade rather large, roundish-oval', 

 flat to saucer-tolded, slightly twisted midrib, drooping; tip acute, slightly twisted; margin typically 

 medium-waved; surface rugose, slightly bullate, semi-glossy to dull, lightly pubescent, rather 

 light yellowish green; serrations medium in size, medium in depth, double, dull serrate to crenate, 

 irregular. 



57. Yellow Gage. Habit upright-spreading, medium in height, medium stout; internodes 

 rather short. Two-year bark light to medium brown, considerable scarfskin; one-year bark pur- 

 plish to brown; young shoots green to purplish; pubescence a trace; lenticels medium in number, 

 small, flush, russet; growing tips reddish; young leaves moderately light to medium green. Petiole 

 wide-angled, medium in length and thickness reddish tinged; glands 1-2, close to or on the blade, 

 moderately small, orften slightly stalked, yellowish, with depiessed centers. Leaf blade medium 

 in size, roundish-oval, flat or broad U-folded to slightly saucer- folded, somewhat drooping; tip 

 acute; margin medium-waved; surface smooth to slightly rugose and bullate. semi-glossy to glossy, 

 very slightly pubescent, medium green; serrations rather fine, rather shallow, double, dull serrate, 

 regular. 



Literature Cited 



1. Alderman, W. H., and J. S. Shoemaker. Use of leaf characters in identifica- 

 tion of plum varieties. Amer. Soc. Hort. Sci. Proc. 22:264-269. 1925. 



2. French, A. P. Plant characters of cherry varieties. Mass. Agr. Expt. 

 Sta. Bui. 401. 1943. 



3. Hedrick, U. P. The plums of New York. 1911. Albany. 



4. Shaw, J. K. Leaf characters of apple varieties. Mass. Agr. Expt. Sta. 

 Bui. 208. 1922. 



5. Shaw, J. K., and A. P. French. The identification of apple varieties from 

 non-bearing trees. Mass. Agr. Expt. Sta. Bui. 274. 1931. 



6. Shaw, J. K. Descriptions of apple varieties. Mass. Agr. Expt. Sta. Bui. 

 403. 1943. 



7. Shoemaker, J. S. Eliminating variet\' mixtures in nursery trees. Ohio 

 State Hort. Soc. Proc. 60:42-51. 1927. 



8. Upshall.W. H. Nursery stock identification (plums, pears, peaches, cherries). 

 Ontario Hort. Expt. Sta. Bui. 319. 1926. 



