—— Ce re ee, ee 
90 MISSOURI BOTANICAL GARDEN. 
tion of circa 0. Preliminarily, I have thought it worth 
while to determine in a few cases what the actual correla- 
tions are. Such results must be of service in planning 
more detailed and critical studies. 
Unfortunately, only the small series of inflorescences for 
1905 is available for our present purposes.1° The correla- 
tion between number of fruits per inflorescence and number 
of seeds per fruit (fruits per inflorescence weighted with 
the number of seeds which they produce) is shown with 
a 5-unit grouping for the seeds in Table IX... The con- 
stant is 
r= — .072 + .02412 
TABLE IX. 
SEEDS PER FRUIT. 
1-5 |6-10|11-15|16-20/21-25|/26-30/31-35|36-40 41-45 46-50)51-55 
Fruits per Inflorescence 
2 A ane 1 e Eee Be css Eee) ee 1 6 
3 | 24 | 11 8 7 6 6 2 1 ae eS Fis 66 
4 | 64 | 22 8} 14) 11 2 3 1 2 ae Pe 128 
5 | 68 | 18 7 6 6 2 1 ee As Sa pment 110 
6 | 65 | 26 | 16 7 | 12 6 2 2 ae 1 138 
7 | 76) 23} 16} 11 6. feicas Lh. a ae eae 133 
8 | 64 | 17 | 12 6 5 8 2 2 2 2 120 
9} 13] 11 7 ae Peet Gee ee ee re 1 8 Sas eee 36 
10} 9; 6 1 1 i eae. ee eet ee ee 1 20 
11 8} 2 Bi Biwins [ees sclevasibes a's sls o OMEEIV ESTER 6 ts heve ts 11 
392) 136} 76 | 54 | 48 | 26 | 12 9 9 1 5 768 
Apparently, therefore, the production of a number of fruits 
10 These were only 193 in number and 50 had one or more of the 
fruits dehisced, so that the number of seeds in them could not be 
obtained. These fruits probably represent, on the average, those con- 
taining the greatest number of seeds, since these ripen first. It seemed 
best, therefore, to discard all inflorescences in which dehisced fruits 
were found. 
11 Probably grouping by fives is too coarse, where variation is as 
skew as it is here. In another study this point should be regarded. 
12 This was obtained by using 768, the number of fruits, as N. If 
the number of inflorescences, N= 143, be used, we have r=— .072 
+ .056 
