TO BOTANY. 9 
not known, unlefs the Suppofition of its fe- 
ecreting the Honey may be depended upon. 
Between the Calyx and Corolla Nature 
has put no abfolute limits; as is plain from 
the Daphnis, in which Plant they grow to- 
gether, and are united in the Margin, like 
a Leaf of the Buxus; but they may be com- 
monly diftinguifhed by their Pofition in re- 
{pect of the Stamina, the Petals and Stamina 
being ranged alternately ; whereas the Seg- 
ments of the Calyx and the Stamina anfwer 
to each other. That this is their natu- 
ral Situation, appears from the complete 
Flowers in the Clafles Tetrandria * and 
Pentandria t: And the Ufe of applying 
this Rule will be found in the Inftances of 
Chenopodium, Urtica, and Parietaria; where 
it decides, that the fingle Cover in thofe Ge- 
nerais a Perianthium, and that it is the Co- 
rolla that is wanting.- Should we infer, 
where only one of the two Covers appears, 
that it isa Corolla, becaufe that is a more 
principal Part, there would be no Certainty 
from fuch an Inference ; as is evident from 
the Ammania, Inarda, Peplis, Ruellia and 
Campanula, in all which the Corolla is often 
found wanting, but not the Calyx. 
* See Part II. Chap. 7, + See Part I. Chap. 8. 
. That 
