EXPEEniENT STATION KEPORT. 4-77 



group. The tall bush sorts, like "Canadian Wonder" and ''Bur- 

 ])ee's lirittlo AVax," may be classed as "Standards," forming the 

 largest group, while the smallest is the "Eunning," and includes 

 such sorts as the "White Marrowfat;" these varieties seem to form 

 an intermediate type between the true bush and the pole bean. 



Two distinct leaf types with intermediates are apparent, the 

 bro-ad, short, and the long, narrow leaf. "Wardwell's Kidney" is- 

 a good example of the first and "Keeney's Refugee" of the second 

 tyjie. There are also marked differences in leaf suface, whether 

 smooth or wavy. 



The plant stem, as well as tbe foliage, may be either a light or a 

 dark green. A dark stalk indicates a dark-seeded parent, while a 

 light green stalk is evidence tliat a white or a light colored bean has 

 been planted. 



From the color standpoint there are four types of flowers, 

 namely, pur])le, pink, striped and white. The striped form seems 

 to be rare among beans, since but one variety with that color, the 

 "Lightning," has been grown at the Gardens. A purple floAver is 

 associated with a black or dark-colored seed ; a pink blossom with 

 a seed between the dark and the light, as the "'Yellow Six Weeks," 

 and the white flower with either a white or a light-colored seed. 



Flat and round pods occur in both the green and wax varieties.. 

 The round pods have the preference because associated more with 

 stringlessness. 



Variations of the green color are the dark and the light shades 

 with some sorts, like the "Goddard," having on the surface stripes 

 or markings of a deeper color. The "striped" pod usually indi- 

 cates a mottled seed, and may be of either the gi'een-podded or wax 

 type. The striped form does not appear until the pod is nearing 

 maturity, a characteristic, for example, of the "Keeney's Refugee." 

 The silvery-gray pod, like that of the "Crystal Wax," is another 

 peculiar variation of the green. In the true wax beans there are 

 the "white" and the "golden" types. 



Of nine assured crosses between a white an<] a black-seeded 

 variety, all gave plants in the blend bearing mottled seed. Fur- 

 thennore, the red and white-seeded varieties, when united, gave a 

 mottled seed in four and the brown and white in two instances, and 

 the crossing of a white-flowered variety with one having a purple 

 flower gave a purple" flower in the flrst generation, and a green- 

 podded united with a wax sort results in a green pod in the blend. 



