NEW SPECIES OF CRESCENTIA. : 4925 
acee, which are also l-celled, for although the ripe fruit of 
both them and Cyrtandracez, possess apparently more than 
one cell, as if produced by the spreading and dividing of their 
parietal placente ; the ovary of both, according to Bentham, 
being always unilocular if examined before the development 
occasioned by fecundation. 
To all the other orders of the dicarpose group, Crescentia 
is of course more or less related, but is abundantly distinct 
from every one. Thus, it is distinguished from Acanthacee 
by its simple calyx, l-celled ovary, unsuspended seeds, and 
in habit; from Lentibulariee, by its parietal not free central 
placentation; and from Scrophulariacee and Solanacee and 
their allies, by its want of albumen. 
While it is evident that it is to the Bignonial alliance that 
Crescentia belongs, it appears equally obvious to me that it 
cannot be joined to any of the Orders in it, without materially 
weakening their characters. _ Lindley remarks (Nat. Syst. 
ed. ii. 282), that ** there do not appear to be any very certain 
‘limits between Bignoniacee, Cyrtandracee and. Pedaliacee, 
which might be reunited without much inconvenience,” and 
this observation is no doubt true; but while these Orders are 
allowed to remain separate, I see no reason why Crescentia 
should not also form a separate order, it being as distinct 
from them as they are from each other. I therefore propose 
_ that the genus Crescentia should form the type of an Order to 
hold an intermediate station between Bignoniacee and Cyr- 
 tandracee, with the following character; but as this c i oe 
ter has been drawn up from the examination of a single spe- 
a only, it will no doubt regira to be much modified, 
CRESCENTI ACER. Gardner. : 
: -Calya riot monosepalous, at first perfectly aire. and 
forming a shut sac around the corolla and genitals, ultimately 
‘Splitting nearly to the base into two, rarely three, somewhat _ 2: 
equal divisions. - Corolla hypogynous, monopetalous, cam- —— 
panulate, irregular, somewhat 2-lipped, the lobes imbricate = 
eesti ation. Stamens * didynamous, with the rudi el 
