FLORA OF McNAB's ISLAND, HALIFAX, N. S. — BARBOUR. 561 



thus we get 3, 2, 2, 1, 1. Nine stamens, instead of ten. 

 'Next come those with only seven, a'nd then those with eight. 



(d) Irregular flowers with coroHa incomplete. — The usual 

 arrangement is one of eight stamens to four petals — 2, 2, 1, 2, 1. 

 Speaking generally, there is much variation in the arrange- 

 ments among the irregiilar flowers, the following being the 

 commonest : — 



3, 2, 2, 1, 1. 



3, 2, 2, 2. 



3, 2, 1, 2, 1. 



2, 2, 2, 1, 1, 



3, 1, 2, 3. 



Jiy Aj Z^ zj ^ _L. 



3, 2, 2, 1. 



3, 1, 1, 2, 1. 



3, 2, 1, 2. 



2, 2, 1, 2, 1. 



2, 2, 2, 1. 



3, 2, 2. 



3, 1, 1, 1. 



1. 



stamens in the whorl. 



8 stamens in the whorl. 



7 stamens in the Avhorl. 

 6 stamens in the whorl. 



No other variants of any consequence noticed, so that these 

 may be held to be the principal arrangements and numbers of 

 stamens in the flowers. 



In the irregular flowers with incomplete corollas, I wish to 

 point out that the numbers of the petals present in the corolla 

 weee usually four or five, and the sepals were decreased in a 

 similar ratio. The carpellary leaves also were decreased in 

 much the same manner. 



Having given the conclusions obtained, it will be necessary 

 to show you practically how these results have been got at, how 

 I started from a certain part of the whorl and went round it. 

 Take the much more usual arrangement, 3, 2, 2, 2, 1. I 

 always began with a three which I presumed to be on the side 

 nearest to me, and passed round the whorl from right to left ; 



