The Inheritance of Peloria in Foxgloves . 
77 
Table II.— Crosses. 
PARENTS. 
Offspring. 
Characters. 
Number 
of Plants. 
D x E 
36 white (=11 red spots 
+ 12 brown spots 
+ 13 yellow spots) 
+ 10 magenta (=10 red spots) 
= 21 red spots + 25 brown or 
yellow spots 
46 
F x E 
15 white + 25 magenta 
= 40 red spots 
40 
Conclusions. 
(1) . Peloria in Foxgloves is a Mendelian recessive to normal. 
(2) . Peloric flowers and also the non-peloric flowers of peloric 
plants carry the recessive character. 
(3) . The allelomorphs responsible for colour are:— 
Mm ; M being magenta colour factor, dominant to m. 
Dd; D being a darkening factor dominant to d and 
converting magenta to purple. 
Ww ; W being a dominant white factor in the presence of 
which the expression of colour due to M is inhibited 
so that the flowers are white. 
(4) . All flowers appear to be spotted. In the presence of the 
colour factor M, spots are red : in the absence of M they are yellow- 
brown. The presence of the dominant white factor W does not 
inhibit the expression of the colour factor M in regard to the spots 
(at least when present as a heterozygote=Ww). 
(5) . The suggestion that dominant white acts differentially on 
ground colour, inhibiting it generally but not in spot-areas, may 
prove of service in explaining the origin of bars, spots and stripes 
in plants and animals and also the behaviour of certain ever- 
sporting varieties. 
REFERENCES. 
Darwin (1868). Animals and Plants under Domestication, Vol. II., p. 46 
(Revised Second Edition). 
Bateson (1901). Report I. to the Evolution Committee, Roy. Soc., 1902, p. 125. 
,, (1909). Mendel’s Principles of Heredity, p. 105, 
