160 ANINTRODUCTION 
the Fru:f alfo ufually varies from five to 
three, and from five to four. 
The Széuation of the Parts is the moft 
eonflant; very rarely varying in the fame 
Genus. 
The Regularity of the Petals is not fo 
much to be depended on as fome former 
Botanifts have * tnought; for we fee in 
Geranium the European Species have regular 
Corollz, but the 4/rican ones irregular. 
The Nesarium Nature has made of the 
greateft Confequence. This Part, which 
had not even a Name till Linneus had dif= 
tinguifhed it, is a decifive Mark in all the 
following Genera, viz. in Orchis, Satyrium, 
Monotropa, Fumaria, Vicla, Malpighia, Ban- 
nifteria, Adenanthera, Commelina, Laurus, 
Helxine, Diétamnus, Zygophylium, Swertiay 
Lilium, Fritillaria, Hydrephyllum, Ranuncu- 
lus, Hermannia, Berberis, Staphvlea, Pafijhra, 
Narciffus, Pancratium, Mirabilis, Nerium, 
Stapelia, Afcleptas, Diofma,Campanula, Plum- 
bazo, Hyacinthus, Rhodsdendrum, Cheiranthus, 
Sinapis, Kiggelaria, Clutia, Aquilegia,Nigella, 
Aconitum, Parnaffia, Eptmed:um, Theobroma, 
Refeda, Grewras Helleborus, Lfopyrum, Trope= 
clum, and Impatiens. 
* Rivinus in particular. 
The 
