448 APPENDIX. No. V. 



The third has the inflorescence and flowers of Naucka, but its ovaria and 

 pericarpia are confluent, the whole head forming a compound spherical fleshy 

 fruit, which is, I suppose, the country-fig of Sierra Leone, mentioned by 

 Professor Afzelius.* 



The Jburth is a second species of Neurocarpcea, a genus which I have 

 named, but not described, in the catalogue of Abyssinian plants appended to 

 Mr. Salt's Travels.f 



• The Jifth genus is intermediate between Rubiaceae and Apocineae- With 

 the former it agrees in habit, especially in its interpetiolary stipules ; and in 

 the insertion and structure of its seeds, which are erect, and have the embryo 

 lodged in a horny albumen forming the mass of the nucleus ; while it resembles 

 Apocineae in having its ovarium entirely distinct from the calyx : its capsule 

 in appearance and dehiscence is exactly like that of Bursaria. 



The existence of this genus tends to confirm what I have formerly asserted 

 respecting the want of satisfactory distinguishing characters between these two . 

 orders, and to prove that they belong to one natural class: the ovarium 

 superum approximating it to Apocineae ; the interpetiolary stipules and struc- 

 ture of seeds connecting it, as it appears to me, still more intimately with 

 Rubiaceas. 



The arguments adduced by M. de Jussieuj for excluding listeria from 

 Rubiaceae and referring it to Apocinese, are, its having ovarium superum, an 

 irregular corolla, fleshy albumen, and only one stamen ; there being no example 

 of any reduction in the number of stamina in Rubiaceae, (in which Opercularia 

 and Pomax are not included by M. de Jussieu,) while one occurs in t}ie male 

 flowers of Ophioxylum, a genus belonging to Apocineas. From analogous 

 reasoning he at the same time decides in referring Gccrtnera of Lamarck § to 

 Rubiaceae, though he admits it to have ovarium superum ; its flowers being 

 regular, its albumen more copious and horny, and its embryo erect. But aU 

 these chai-acters exist in the new genus from Congo. These two genera 

 therefore, together with Pagamea of Aublet, Usteria, Geniostoma of Forster 

 (which is Anasser of Jussieu) and Logania,'^ might, from their mere agree- 

 ment in the situation of ovaiium, form a tribe intermediate between Rubiaceae 



* Sierra Levne Report for 1194, p. \1\,n. 32. 



+ Voj/age to Abyasiniu, append, p. Ixvi. % Annul, du Mus. d'Hist. Nat. 10, p. 383, 



% Illustr. Gen. tab. 167. H Prodr. Ftor. Nov. BoU. \,p. 455. 



