to'be stationed. In fact, like Petunia in Solaneee (see fol. 
1626), this is a genus which stands on the very boundary 
line of two Natural orders, passing by one part of its struc- 
ture into Papaveracee, and by another part into Ranuncu- 
lacez, but with the mass of its characters preponderating in 
favour of the former. Its habit is also that of the Poppies 
rather than of the Crowfoots, and its curious fruit may be 
compared to that of Hypecoum, with the carpels separated 
and increased in number. The contractions of the sides of 
the carpels, in consequence of which the seeds are confined 
in little closed cells, occur equally in Hypecoum, but being 
of the same nature as those in the fruit of the Radish and 
its allies among Cruciferous plants, of Ornithopus and others 
among Leguminous plants, of several Anonacew, and of 
divers others, cannot be esteemed characteristic of one 
Natural order more than another; in fact, such fruits may 
dvor pected to occur in any and every polyspermous Natural 
order. 
The following arrangement will serve to show in what 
order a series of genera to connect the Poppy with Platy- 
stemon, and the latter with Ranunculaceze, would naturally 
follow ; taking the Poppy for the typical centre of a Papave- 
raceous groupe. i 
Papaver — Meconopsis — Glaucium — Eschscholtzia — 
Hypecoum —Platyste-|-mon—Trollius, Ke. 
In the analysis of the accompanying plate, 1, represents 
a stamen; 2, a cluster of carpels; 3, a separate carpel, 
seen in profile. 
