RTT 
i 
197 
LABIATÆ. 
General remarks. It has for some time, struck me that 
neither Labiatæ nor Boragineæ are formed on a quarternary 
plan as to the carpella. I was first led to this opinion by ob- 
serving in a series of observations, the constant relation be- 
tween the number of vascular fascicles of the style, and that 
of the carpellary leaves entering into the formation of the 
Pistillum. 
This view appears to have been hitherto neglected. 
In the cases in which the number of vascular fascicles ex- 
ceed that of the carpellary leaves, the law remains unchang- 
ed, owing to the evident arrangement of the bundles of 
„vessels or fascicles into groups corresponding with the number 
of the carpellary leaves. 
A still more obvious circumstance is to be taken 
into consideration, that is the number of styles. If we 
Pass in review the whole of syncarpous orders, we find that 
the number of styles however united they may be, (and in 
this case only determinable by the number of vascu- 
lar fascicles,) it is constantly the same as that of the number of 
carpella, and this law is most obvious in the gynobaseous 
orders. Further it remains to be proved whether in one 
single instance the carpellary leaf is developed into an ovary 
T portion of one, in which the style or stigma remains un- 
developed, 
P erhaps the contrary is the fact, the style or stigma being 
„nce the most permanent part; of this I only know one 
mstance, and that is in Clypea or rather Cissampelos. 
"ae Structure of Boraginez and Labiatze, is to be ex- 
Plained either by assuming the abortion of the styles, etc. 
: two carpella, or of their binary coalescence. The former 
explanation can scareely be considered as sound, for there 
^ not a Single instance that can be ‘adduced in its support. 
Of the latter there is no external (as indicated by furrows 
lobes of the stigmata,) or internal evidence. The pistils 
