cami iia als 
150 MISSOURI BOTANICAL GARDEN. 
Picris hieraciotdes etc.*) The time of sowing also 
seems to be of great influence. Goebel t calls attention to 
the fact that by leading the sap rapidly and with great in- 
tensity to a lateral bud, which ordinarily contains but little 
sap, fasciation may be produced. Thus he explains the 
frequent occurrence of fasciation in suckers and water- 
sprouts. Similarly, fasciation may be produced in annuals 
(Phaseolus multiflorus, Vicia faba) by cutting off the main 
stem directly above the cotyledons. Lopriore t was able to 
produce root fasciation both by cutting off and by splitting 
the root tip, but did not succeed in producing it by sub- 
jecting roots to prolonged pressure. On the other hand, 
Sorauer § quotes an instance of a stem of Tecoma radicans 
which had become fasciated through appression to a wall, 
and of which the parts reaching above the wall likewise 
showed fasciation. 
Experiments, mainly carried on at the Missouri Botanical 
Garden, have shown that at or just previous to the flower- 
ing period, plants, especially those with an indeterminate 
inflorescence, may be caused to fasciate by the use of the 
following method:—About the time of the appearance of 
the first flower 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 
indeterminate inflorescence, the buds near the end of the 
spike remain undeveloped. If at this 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 
* Ibid. 549. 
+ Goebel, K. Joc. cit. 164. 
I Lopriore, G. I caratteri anatomici delle radici nastriformi. 
Rome. 1902. 
§ Sorauer, P. Handbuch der Pflanzenkranheiten. 1:334. Berlin. 
1906. 
