I9H] brannon— FASCIA TION 5 23 



mmetrical cylinders having 



terminal 



season's growth. The uniform diameter 



smooth 



bark, presented a great contrast to the unsymmetrical, fluted 

 cortex produced during the three previous seasons. Seemingly 



chemical 



d reached stages similar to those which prevail in the produ< 

 normal cylindrical stems. 



Hus 1 states that fasciation may be produced experimen 



(Phaseolus multifl 



stems 



these annuals fasciated when they were cut off directly above the 



am 



or split. Hus also showed in work carried on at the Missouri 

 Botanical Garden that plants with an indeterminate inflorescence 

 would fasciate when treated as follows: 



About the time of the appearance of the first flowers the plant is kept 

 as dry as possible, only enough water being given to prevent wilting. As 

 a result, the flowering period will be comparatively short, and, in an indeter- 

 minate inflorescence, the buds near the end of the spike remain undeveloped. 

 If at that time the plants are daily abundantly irrigated, occasionally with 

 manure water, numerous fasciations will make their appearance, but it must 

 be remembered that this result is usually reached only with plants which 

 throughout their existence have been well nourished and well cared for 

 generally. For no apparent reason, one plant will fasciate, while the next 

 one belonging to the same species remains normal. 



From this and other experiments, Hus concludes that Goebel 

 is correct when he affirms that fasciation results from the rapid 

 introduction of sap into stems which would not normally have 

 fasciated. This conclusion was further supported by experiments 

 carried on at Berkeley, California, in September 1904. Within a 

 week after a heavy rainfall a very large number of teratological 

 cases appeared. They were represented by fasciations, by torsions 

 of the stem, petalody of the stamens, phyllody of the pistils, and 

 prolongations of the axis through the center of the flower, known 

 as frondiferous diaphysis. Hus further cites the experiences of 



1 Mo. Bot. Gard. Report, 1906, pp. 147-152. 



