{Vou. 11 
484 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Turning to the comparisons between the 2 years in the same 
habitat, we note that while the difference in means is perhaps 
statistically significant! in the 2 cases it is relatively small, being 
about 5 per cent in the 2 instances. It is also to be noted that 
in one habitat it is the 1906 series, whereas in the other it is the 
1907 series, which has the higher seed production. 
The differences between the 2 habitats in the same year 
show that for both years seed production is materially and sig- 
nificantly higher in the Meramec Highlands than in the Jefferson 
Barracks plants. 
2. THE gente La Lui BETWEEN THE NUMBER OF FLOWERS AND 
E NUMBER OF CAPSULES MATURED 
The 5. between number of flowers per inflorescence 
and the number of fruits per inflorescence may be computed for 
TABLE XV 
CORRELATION BETWEEN NUMBER OF FLOWERS AND FRUITS PER 
INFLORESCENCE ie 
Correlation Correlation 
between flowers per in- 
т inflor тепсе, | 7 
Series N of E, | and deviation | E; 
flowers of fruits from 
and their probable 
fruits value 
Meramec Highlands 1906 (1) 300|.67512-.0212|31.84| .0278--.0989 | 0.71 
Meramec Highlands 1907 (IV) 300| .6565-.0222 | 29.57| —.0986--.0386 | 2.55 
Merame Highlan 907 (V) 05| .6047 + .68| .0451--.0385 | 1.17 
Meramec Highlands 1907 (IV) --(V) | 605| .6261--.0167 |37.49| .0343-+.0274 | 1.25 
Jefferson Barracks 1906 (II) 250| .6125--.0267 | 22.94 .0576-Е. з 1.36 
Jefferson Barracks 1906 (ТП) 1000| .6416--.0125 | 51.33] .0693-Ь.0212 | 3.27 
Jefferson Barracks 1906 (П)--(ІП) |1250) .6374--.0113 |56.41] .0771-. 190 y 
Jefferson Barracks 1907 (VI) us .5344 2-.0304 | 17.58| —. 103 0 
Jefferson Barracks 1907 (VII) 020] 6897 +.0111| 62.14} .06522-.0210 810 
Jefferson Barracks 1907 (VD (VID|1270] 6638.0106 62.62| —.0407 +.0189 | 2.15 
the 4 series in which the seeds were counted from the entries in 
tabler. For the 3 other series in which only the number of flowers 
and fruits were determined the reader must refer to table п. 
The е between the number of flowers formed and the 
number of — matured per inflorescence is expressed in 
1'Th a: hahlo errors. alt 
the correlation mitem the locules of the same fruit ane somewhat their 
interpretation. 
