HILGARD—NATURAL SERIES. 185 
according to phyllotactic necessity, and the two superior ones 
saccate, almost calearate, at base; as in Diclytra. 
In Tropeolacee we perceive "the balsamineous form be- 
come perigynous, and if, inductiyely, we look for the expec- 
ted ¢ dro form, on the advanced hypothesis, the a re- 
quired seems to correspond to ssa or ntioned 
by Endlicher, — sna ae hich, in their out 
ly 
nana 
as 
(Biscutella !), bears two desilient valves, while in Geraniacee 
we have 5 one-seeded (rostrate) elements, in Tropxolacee 3 
and 2; in Fumariacee and Crambe a single one. That the 
number of region is of little impor 
