Eversporting Varieties with Heritable Fasciation. 513 
Geranium molle fasciatuin in the next section. Of this 
race, one-third consists, as a rule, of individuals with 
fasciated branches. In 1895 I was growing its sixth 
generation. I have also cultivated six generations of 
Taraxacum officinale fasciatnm. This species, as a rule, 
produces 30%, and sometimes more, of fasciated individ- 
uals. Beautiful instances of fasciation have been fur- 
nished almost every year, since 1885, by Tetragonia ex- 
pansa in the botanical garden in Amsterdam, and the 
proportion of these was, in the fourth and fifth genera- 
tions after isolation, slightly over 50%. 
The same general behavior was observed in my fas- 
ciated races of Thrincia lurta, Veronica longifolia, Hes- 
peris matronalis, Picris hieracioides etc. 
From these data we may draw the general conclu- 
sion that such races, after having been isolated and sub- 
jected to good treatment, and by the selection of the 
finest instances of fasciations as seed-parents, consist of 
a little less than one-half of fasciated individuals, and of 
a little more of apparently normal, atavistic, plants. This 
proportion, ho\vever, depends to a large extent on ex- 
ternal conditions. Bv means of suitable cultivation it 
/ 
can be considerably increased, but on cessation of this 
care it soon sinks to quite low values. 
Many of the known instances of fasciations probably 
behave in the same way. For instance KORNICKE has 
grown for many years a perfectly constant race of a 
fasciated pea (Pisitm sativum) in Poppelsdorf, and RIM- 
PAU has informed me that he cultivated this fasciated 
race from seeds during several years in good garden soil 
and found it constant. The result of sowing the seed 
of Sednni refiexinn cristahun (Vol. I, p. 183), in this 
garden, was the reappearance of the abnormality in large 
