414 REPORT OF THE CONFERENCE ON GENETICS. 
In the two species, Agapanthus Mooreanus and Lobelia tenwior, both 
self-fertilised, from 83 to 90 per cent. came true to colour, from 10 to 
17 per cent. were albinos. No new shades. 
Phyllocactus Cooperi (white) x P. Ackermanni (red) gave nothing but 
reds and pinks. Reverse cross gave 33 reds, 14 pinks, 3 orange, and 
17 magenta. The appearance of orange is easily accounted for. The 
blue shade is perhaps due to a colour-erraticism latent generally in 
P. Ackermanni, but almost typical of several Cacti. Even in P. Ackermanni 
the stigma is always bright purple. 
Pink appears as a result of crossing red or orange with ae as in 
Hippeastrum (p. 411, hybrid 68). 
Kalanchoé kewensis. 
Begonia weltoniensis {both in cross and reverse cross]. 
But red crossed with white also produces orange in at least a certain 
percentage of seedlings, as in the results I have obtained in crossing 
Hippeastrum (crimson self x H. vittatwm). 
Phyllocactus Ackermanni x P. Coopert (8 orange out of 67). 
Pink is also a colour-erraticism dominant in some plants (or is the 
result of crossing blue with white). In my garden I had only blue and 
white forms of Scilla festalis for some years, after which a number of 
pink seedlings appeared. This pink form is well known, but was absent 
from my garden. Perhaps there is some red in the purplish-blue forms 
of the blue S. festalis, which may result in pink, if the result of a cross 
with an albino is to destroy the blue colour cells (?). Otherwise the pink 
is a latent erraticism. Or possibly the albino is a hybrid and casts 
coloured (fixed) forms in a certain ratio according to Mendelian law. 
Certain red Cannas and yellow Cannas were both tested and came true 
from seed when self-fertilised. When crossed, orange-reds and brick-reds 
predominated. When the yellow was the female, all the crosses were 
equipoised as to colour. When the red was female, 8 per cent. were pure 
reds, 92 per cent. equipoised. 
A crimson-self Hippeastrum crossed with H. vittatwm gave 4 crimson 
selfs, 4 bore the colour and markings of H. vittatwm, and 81 were of 
intermediate colours (this is a colour analysis only). 
