APPENDIX. No, V. 449 



and Apocineae. This tribe, however, would not be strictly natural, and from 

 analogy with the primary divisions admitted in Rubiaceae, as well as from 

 habit, would require subdivision into at least four sections : but hence it may 

 be concluded that the only combining character of these sections, namely, ovarium 

 superum, is here of not more than generic value : and it must be admitted also 

 that the existence or absence of stipules is in Logania * of still less importance. 



APOCINE^. There are only six plants in the collection belonging to 

 this order : 



The first of these, together with some other species from Sierra Leone, 

 constitutes an unpublished genus, the fruit of which externally resembles that 

 of Cerbera, but essentially differs from it in its internal structure, being 

 polyspermous. The Cream fruit of Sierra Leone mentioned by Professor 

 Afzelius,t probably belongs to this genus, of which an idea may be formed by 

 stating its flower to resemble that of Vahea, figured, but not described by M. 

 Lamarck,! and its fruit, that of ^'oacanga§ of M. du Petit Thouars, from 

 which bird lime 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 at Sierra Leone by Professor 

 Afzelius, who has not yet described it, but has named it Anthocleista. 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 obsenations 

 it is bilocular. M. de Jussieu has appended Potalia to his Gentianeae, 

 partly determined, perhaps, from its being described as herbaceous. The 

 species of Anthocleista from Congo, however, according to the account given 

 me by Mr. Lockhart, the gardener of the expedition, is a tree of considerable 

 size, and its place in the natural method is evidently 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 Apocineae, no exception occurs either 



* Prodr. Flor. Nov. Holl. 1, p. 455. t Sierra Leone Report, 1794, p. 173, n. it- 



* Illuslr. Gen. tab. 169. ^ Nov. Gen. Madagasc. n. 32. 

 Ij Asiat. Resear, 5, p. 169. 



3 M 



