FASCIATION IN OXALIS CRENATA. 151 
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. This, 
however, affects in no way the value of the experiment, 
since this is undertaken only with a view to determining 
whether in any species fasciations can be produced. Dur- 
ing 1905 fasciations were obtained by this method in An- 
tirrhinum majus, Actinomeris squarrosa, Solanum Lyco- 
persicum ‘¢ Magnus, ”’ Lythrum virgatum, Oenothera La- 
marckiana and Collomia grandiflora. Experiments with 
Solanum Pseudo-capsicum, Capsicum annuum, Sola- 
num nigrum and Abutilon Avicennae yielded no fascia- 
tions. 
It would seem that the cause of fasciation must be 
ascribed to the rapid introduction of sap into buds which 
would not normally produce them, as is suggested by Goe- 
bel. This is further borne out by observations on numer- 
ous plants, both cultivated and wild, growing at Berkeley, 
California. It was noted that within a week after a heavy 
rainfall at an unusual time (September, 1904), an ab- 
normally large number of teratological cases were to 
be met with. They were not limited to fasciations, 
though these were most frequent, but included torsions, 
petalody of the stamens and phyllody of the pistil, 
frondiparous diaphysis — the prolongation of the axis 
through the center of the flower when the prolongation 
bears the character of a leafy shoot,” and fasciculations. 
One of the most interesting cases of the latter was met 
with in Picris echioides which showed also a slight chloro- 
sis of the flowers, which were stalked. Contrary to expec- 
tation, prolification, i. e., the production of secondary 
heads, which so often goes hand in hand with this phenom- 
enon, was not observed. 
* This may be frequently observed in the peloric variety of Digitalis 
purpurea. 
