NATURAL ORDERS. 133 



_ zVPOCINE/E. There are only six plants in the collec- 

 tion belonging to this order. 



Tue first of these, together with some other species from 

 Sierra Leone, constitutes an unpublished genus ^ the fruit 

 of which externally resembles that of Cerhera, but essen- 

 tially differs from it in its internal structure being polj'- 

 spermous. The Cream fruit of Sierra Leone, mentioned 

 by Professor Afzelius,^ probably belongs to this genus, of 

 which an idea may be formed by stating its flower to re- 

 semble that of Vahea, figured, but not described by M. 

 Lamarck," and its fruit, that of Yoacanga^ of M. du Petit 

 Thouars, from which birdlime is obtained in Madagascar, 

 or of Urceola' of Dr. Roxburgh, the genus that produces 

 the caoutchouc of Sumatra. 



The second belongs to a genus discovered in Sierra 

 Leone by Professor Afzelius, who has not yet described it, 

 but has named it Anfhocleista. This genus, however, 

 differs from Potalia of Aublet (the Nicandra of Schreber) 

 solely in having a four-celled berry ; that of Potalia being 

 described both by Aublet and Schreber as trilocular, 

 though according to my own observations it is bilocular. 

 M. de Jussieu has appended Potalia to his Gentianese, 

 partly determined, perhaps, from its being described as 

 herbaceous. The species of Anthodeista from Congo, 

 however, according to the account given me by Mr. Lock- 

 hart, the gardener of the expedition, is a tree of consider- 

 able size, and its place in the natural method is evident^ 

 near Fagrcea. 



Whether these genera should be united with Apocinese 

 or only placed near them, forming a fifth section of the 

 intermediate tribe already proposed, is somewhat doubtful. 



In the perfect hermaphrodite flowers of Apocinese, no 

 exception occurs either to the quinary division of the [«o 

 floral envelopes and corresponding number of stamina, or 

 to the bilocular or double ovarium ; and in Asclepiadece, 

 which are generally referred by authors to the same order, 

 something like a necessary connection may be perceived 



' Skrra Leone Report, 1794, f. 173, n. 47. ^ Illmtr. Oeii. tab. 169. 



' Nov. Gen. Madagasc, n. 32. '' Asiat. Besear. 5, p. 169. 



