Rhodora 
176 [OcroBER 
The F, whites which were chosen as mother plants were all alike, 
and typical Their progeny consisted of both 1st and 2d form her- 
maphrodites, quite indistinguishable from those which were descended 
from yellow mother plants. 
In all of the Fs cultures a few of the whites showed a more or less 
pronounced gynomonoecious tendency. When only a very few flowers 
were of the 2d form, and the spikes were typical, the plants were 
counted as whites. If, however, the flowers were very aberrant, 
the stamens crumpled, or the perianth did not expand, and the spikes 
were abbreviated, the plants were regarded as "unclassified." In the 
following table, which summarizes all the cultures, the “unclassified” 
column includes both these aberrant plants and those which after 
being kept under favorable conditions for two years had still not 
flowered. 
lst form 2d form 
hermaphrodites |hermaphrodites| Unclassified | Total 
(whites). (yellows). 
First F; from original yellow. 53 — 3995 7325895 | 112895 | 187 
Second F; from original yellow. | 53-5295 4324295, | 6=6% | 102 
Total F, 106 = 44% 116-4895, | 17=8% | 239 
F; from No. 9, yellow. 44=48% 47 =52% 0 91 
F: from No. 12, yellow. 34 — 4005 50 — 60€; 0 84 
F; from No. 20, yellow. 52 — 46% 5925295, | 22295 | 118 
F, from No. 65, yellow. 57 =59% 3823995, | 2=2% 97 
Total F; from four F; yellows. | 187=49% 194=50% | 4=1% | 385 
Total F, and F, from yellows. | 293 — 47975 31025095 | 212395 | 624 
F: from No. 46, white. 96 — 6795 3622595 | 122895 | 144 
F» from No. 49, white. 55 — 5095 56 — 5095 0 111 
F; from No. 56, white. 5125095 4924895, 2=2% | 102 
Total F; from three F, whites. | 202 =57% 141=40% | 14=3% | 357 
Total F; and F, progeny of 
mother plant. 495 250.595 | 451=46% | 35=3.5%| 981 
There is no apparent explanation for the difference in constitution 
between the two F cultures, one of which resulted from foreign polli- 
nation and the other from pollination within the physiologically 
gynodioecious strain. It will be noticed that the first F; culture 
agrees fairly well with the Fs cultures from typical F, yellows Nos. 9 
and 20. To ascribe the discrepancy between the two F; cultures to 
the source of the pollen would necessitate the assumption of a much 
