IN LINDENBERGIA. 63 
2. Inner view of perfect anther, a pollen mass shewn in 
situ. 
3. Transverse section of anther. 
4. Ideal section of pollen mass. 
5. Under view of gland. 
STIGMA. 
- All corollas are originally or in their earliest periods of 
formation, polypetalous, and regular; and in all, the alter- 
nation of the parts is more or less distinct. 
Therefore, a polypetalous irregular corolla represents 
. long before it is matured, the mature state of a polypetalous 
regular corolla. 
Consequently, a polypetalous regular corolla, in its deve- 
loped state, is the most simple of all flowers. - 
A. monopetalous regular corolla, in its earliest stage, is a 
polypetalous regular corolla. 
A monopetalous irregular corolla passes through the phases 
of monopetalous and. polypetalous regularity.. It ought 
perhaps to present the following phases: Polypetalous 
regular, polypetalous irregular; monopetalous regular, mo- 
. nopetalous irregular. 
It follows, that as irregularity is of later development, 
it is a more mature phase, that it is somparatizely a sign of 
perfection. 
' Hence, irregular flowers are much more common in 
Dicotyledons than in Monocotyledons. 
By irregularity I do not mean irregularity from abortion, 
but irregularity from an inequality, or increase of develop- 
ment: all appendages in some measure come under this 
head 

. Signs of imperfection of Monocotyledons. 
In Lindenbergia the same phenomena occur. The 
axis of inflorescence will be found to present every gra- 
dation of structure, from the cellular grumous discoid ter- 
mination of the axis itself, to the ringent personate perfect 
flowers. 
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