1917] 
PRING—-HYBRID NYMPHAEAS 3 
raise all plants required in working out the Mendelian law 
would necessitate a larger water area than the total area of 
the Garden. 
X NYMPHAEA CASTALIIFLORA PRING, N. НУВ. 
(Nymphaea capensis var. zanzibariensis 9 X Nymphaea 
capensis var. zanzibariensis à ). 
This pink-flowered hybrid is the result of intercrossing two 
light pink races of N. capensis var. zanzibariensis during 1912, 
the progeny being a great improvement over any previous 
hybrid. It was self-pollinated, with the object of fixing the 
ШІ” 
g. 2 Nymphaea castaliiflora; 8, 54 Р, petals; St, Б om half 
PIA, a e. 
light pink color, and during the first year one hundred plants 
were cultivated. The results showed 2 per cent of blue 
flowers, which, however, were inferior to the pink both in the 
size and number of the floral segments. The remaining 98 
per cent were of the same dominant light pink color, with no 
variation, unlike Nymphaea ‘‘ William Stone’? and Nymphaea 
** Mrs. C. W. Ward." 
The second year of self-pollination revealed flowers with 
a total exclusion of the blue color, the same dominant pink 
color being present, and the third year’s experiments pro- 
duced the same results. Therefore, the evidence suggests that 
this large, semi-double hybrid has become fixed. Homoeosis 
is well represented in the flower which bears four complete 
