S06 
Organ Canna indica Canna glauca 
Stem “tall, about 23m: low about 1 m. 
stool with few stalks stool with many stalks 
Leaves short about 39 em. long about 50 em. 
broad, about 16 em. narrow, about 12 em. 
with broad red margin green 
shiny dull, on account of a layer 
of wax 
Staminodes {wo three 
dark red pale yellow with a few 
pink spots 
short, average 59 m.m. long, average 83 m.m. 
narrow,8—12 m.m., average broad 13—20 m.m., aver- 
10—8 age 16—2 
Ovary red green 
Seeds small large 
round oblong- 
unifermly black brown with black speckles 
The two plants used for crossing were both F2 individuals, 
obtained by repeated self pollination and were similar to their Fl 
and P. After repeated failures a single ripe fruit was obtained from 
the cross glauca > indica; it contained two seeds, one of which 
failed, so that the entire Fl consisted of a single individual, since the 
reverse crossing was unsuccessful. This one individual was tall, had 
long, fairly broad leaves, with a red margin and a covering of wax, 
somewhat orange-red flowers with 3 long, broad staminodes, red 
ovaries and large, long, black seeds. The dominant characters are 
printed in italics in the above comparison. 
Of the F2 1168 seedlings have so far been obtained, of which 
867 after artificial pollination and 301 after free pollination; no 
other Cannas grew in the neighbourhood. Of these 1168 plants a 
fairly large number died before flowering, so that for many of the 
characters accurate ratios have perhaps not been found. The devia- 
tions from the numbers to be expected in an independent Mendelian 
segregation are in some cases, however, so considerable, that they 
cannot possibly be reduced to them, not even on the assumption, 
that all the dead individuals belonged to the type or types of which 
there was a shortage. For the present we must say, therefore, that 
there was hardly any evidence if at all of an independent Mendelian 
segregation, as will appear from the following discussion of soine 
of the characters. 
Ss 
= nn 
