Stout & Boas: STATISTICAL STUDIES ім CICHORIUM 375 
TABLE 11 
SEASONAL DISTRIBUTION OF NUMBER OF FLOWERS PER HEAD FOR THE FIRST YEAR 
OF BLOOM OF AN Fi GENERATION PLANT (C X Ex) no. I DERIVED BY CROSSING 
A WILD PLANT (C) AND A PLANT OF BARBE DE CAPUCIN (Ex). DATA FOR 1913 
Number of flowers Aw паша 3 
per head E 
8 13 14 16 19 25 27 30 13 23 29 | Е 
17 Tt Pra Mey": Lor 1 E 6 
18 I 2 I I 2 ied ok tac CE T 
19 І 4 3 2 4 5 8 4 5 7 7 e| 50 
20 3 2 I 4 3 I 2 2 E Y i | 22 
5 М | 
Averages aca MU. I9.4| I9.3| 18.8 10.4 19.3| 18.5| 19.2| 18.7! 19.4] 18.5| 18.7| 18.0: 90 
[o] 2. 18.9 a 19.2 
[ot] = — 5.00 b = — 0.016 
Ш = то t 53 
[?] = 285.75 
of heads greatly increased, the range of flowers per head was 22-13, 
and there was a rather uniform and gradual rate of decrease. For 
the third year of bloom (TABLE 13), the period of bloom and range 
of partial variability were quite as in the previous year, but there 
were irregularities in the decrease in that the lowest numbers per 
head were reached in the latter part of September followed by a 
rather decided increase in number per head. For the successive 
years the numbers for average flowers per head [o] are 18.9, 18.3, 
and 17.9; the values for the first day of bloom (a) are 19.2, 21.8, 
and 18.5, and the values for rate of decrease are — 0.016, — 0.068, 
and —0.028. Both the average number per head [o] and the value 
for the first day of bloom (a) are decidedly lower in the third year. 
The interannual variation in regard to the intraseasonal 
variabilities was marked in the case of a plant for which data are 
presented in TABLES 14 and 15, and which have already been 
referred to as unusual types of interseasonal performance. Here 
the behavior in the first and second years of growth involve 
marked differences in the decrease and range. Іп the first year 
the daily range and average remained quite the same, in the second 
year there was a decided decrease in average, but the decrease in 
range was seen only in the higher number. The values of the 
number for first day of blooming, 15.3 and 17.1, are widely differ- 
ent, as are the rates of decrease +0.001 and —0.054. However, 
the averages for flower number per head are quite identical, 15.3 
and 15.8. 
