INDEX. 



ALbelia, resupination of its perfect 

 ovula, 448-9 



Abyssinia, list of new and rare plants 

 collected in, by H. Salt, Esq., 91 ; 

 Flora of, has but little affinity to 

 that of the West Coast of Africa, 162 



Acacia, reason why the- leafless species 

 of, form one of the most striking 

 features of the vegetation of Terra 

 Australis, 23, 62 ; species found in 

 the interior of New Holland, 339 



Acanthacese, observations on the 

 species found in the vicinity of the 

 Congo, 134 



Acrostichum aureum, identity of Af- 

 rican and American specimens, 169 



Acrostichum calomelanos and its allies, 

 the fine powder on their under 

 surface entirely composed of simple 

 molecules and their primary fibre- 

 like compounds, 473 



Acrostichum velleum,the only Acotyle- 

 donous plant in the collection from 

 Central Africa, 303 



AdansoD, number of plants collected 

 by him in Senegal, 100 



Adhesion of the funiculus to the 

 septum as a generic character in 

 CrucifersB, 262, 268 



Estivation, form of, in Cleome penta- 

 phylla, Cratevaand Resedacese, 273, 

 279 



Afzelius, Adam, number of species of 

 plants collected by him at Sierra 

 Leone, 101, 152 



Africa, Central, observations on plants 

 of, collected by Oudney, Denham, 

 and Clapperton, 257 



Agathis, origin of the ovulum in, 458 ; 

 analogy of male and female organs 

 in, 461 



Albumen, how formed, 451-2; pecu- 

 liarities of, in various plants, 452 



Alsodeia includes Ceranthera, Passalia, 

 Conohoria, Rinorea, Riana, Passura, 

 Piparea, and Physiphora, probably 

 Pentaloba, and perhaps Lauradia, 

 123-4 



Alsodinse, a section of Violese, 123 



Amnios, how developed, 451 



Amygdalese, a distinct order of the 

 class Rosacese, 115 



Amyrideae, observations on the order, 

 and on the species found in the 

 vicinity of the Congo, 112 



Anona Senegalensis, a very genera! 

 plant along the whole of the West 

 Coast of Africa, 153 



Anonacese, Eupomatia referred to, 74 ; 

 observations on the species found 

 in the vicinity of the Congo, 105 



Antherse and Pistilla, analogy of com- 

 position in, 378 — 380 note ; proved 

 by the transformation of one into 

 tlie other in cases of monstrosity, 

 379 noie ; differences in vascularity, 

 &o., between the two organs, ibid. 



Anthera of Rafilesia, structure of, 

 377 — 383 ; principal forms of, in 

 Phaenogamous plants, 378 — 381 : 

 supposed regular type, 378 ; prin- 

 cipal deviations from, 379^381 ; 

 reduced development in many La- 

 biates, in Epacridese, Polygalese, 

 some genera of Acanthacese, West- 

 ringia, Anisonieles, and Marantese, 

 380; increased development in 

 many ScitamineEB, Orchidese, and 

 Laui'inea;, and in iEgiceras, ibid. ; 

 reduced and increased development 

 coexisting in the same organ, as in 

 the greater number of Salvise, and 

 38 



