Vol. 41 Ainge No. 11 
BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
ee ee 
NOVEMBER, 1914 
Further observations on the relationship between the number of 
ovules formed and the number of seeds developing in Cercis 
J. ARTHUR HARRIS 
(WITH FOUR TEXT FIGURES) 
I. INTRopuCTORY REMARKS 
In an earlier paper,* I discussed upon large masses of data 
drawn from series of trees in different habitats the relationship 
between the number of seeds maturing and the number of ovules 
formed in the legume, Cercis canadensis. The analysis of the 
more homogeneous collections from individual trees was then 
reserved. This is now undertaken. 
II. ANALysis OF DATA 
A. The Meramec Highlands Collections 
For convenience of treatment merely, I recognize two series, 
the first comprising Io trees from which a relatively large number 
of pods were taken and the second embracing 100 trees from 
which 50-100 pods each were gathered.t 
Table I gives the data and Table II the essential constants 
for the 13 large samples. 
That the samples differ from tree to tree is especially con- 
spicuous in the averages. Means such as 3.56, 3-75, 3- 88, 4.26, 
* Ha artis, wh Ar thur, On the relationship between. the nutabet of ov ules formed 
and the number of seeds developing in Cercis, Bull. Torrey Club 41: 243-256. 1914. 
} From three trees of this latter obliection a much larger number of pods was 
taken; ane are, therefore, included here. The first hundred pods are also treated 
below, where the small samples from individual trees are discussed. 
(The BuLLETIN for October (41: 483-532) was issued 28 O 1914.] 
533 
