The Origin of Li mm a rulyaris Pcloria. 207 
on the highest lateral twig below the main flower- 
spike. 
The question suggests itself, Is the power of pro- 
ducing isolated peloric flowers inherent in all plants of 
Linaria vulgaris? Or are there two races, one with and 
one without this faculty? This question seems not to 
have been investigated as yet. 
From the observations already 
described it must be concluded 
that this point can never be de- 
termined in the field, for the 
absence of the abnormality on 
particular days, or even in par- 
ticular years proves nothing in 
itself. Personally I think it 
likelv that both kinds exist and 
J 
that there are localities for Li- 
naria vulgaris in which these ab- 
normalities are never found. 
Holland however is not one 
of these. By paying attention 
to them when out on an expe- 
dition, one will find isolated pe- 
loric specimens fairly frequently 
and in the most diverse localities. 
When I wanted a specimen to 
photograph for an illustration (Fig. 41), I asked my 
wife to look for one in the neighborhood, and it was 
not long before I had one. The power to produce them 
is, therefore, widely distributed in this country; and 
also obviously heritable although in a latent state as a 
rule. Whether or no there are localities in which this 
character does not occur, I cannot tell. 
Fig. 41. Linaria vulgaris 
licinipcloria. Branch of 
a normal flowered plant 
with a single peloric 
flower. Zandpoort, Aug. 
1900. a, normal one- 
spurred flower, b, a Pe- 
loria. 
