AND TROPICAL AFRICA. 1G7 



Nat. Ord. SIMARUBE/E. 

 Nov. Gen. Irvingia, H. f. 



Flores hermaphroditi. Calyx 4-5-partitus, parvus, imbiicatus. Petala 4-5, patentia, late oblorga, im- 

 bricata. Discus crassus, pulviniformis, elevatus. Stamina 10, basi disci extus inserta, filamentis 

 nudis filiformibus, Ova?'ium ovoideum, apice depresso disci insertum, biloculare, stylo 1 curvo, 

 stigmate simplici, ovulis loculis solitariis, axi medio insertis. Drupa magna, crassa, lignea, lineari- 

 oblonga, leviter compressaj abortu 1-locularis, 1-sperraa. Semen lineare, prope apicem loculi appen- 

 sum, testa subcrustacea, embryone axi albuminis copiosi recto, cotyledonibus planis, radicula brevi 

 supera. — Arbores Africa tropicae occidentalis, glaherrimce, insapida, ramulis ad nodos annulatis, 

 gemmis squamis convolutis obtectis. Folia alterna, simplicia, petiolata, exstipulata, integerrima, nitida, 

 membranacea v. coriacea. Pauiculie axillares et terminales, ramosa, ramulis ad nodos annulatis. 

 Florea parvi, Jlavi, odori. Drupse magnae, edules. 



This singular genus I refer to the Simarubece as modified by Planchon, and to a divi- 

 sion of the Order with 2-5-celled ovaries, 1-ovuled- cells, and simple leaves ; it thus 

 ranlvs near Soulamea and Amaroria, difl'ering from these in the very large disk, in habit, 

 and many other characters. The annulation of the branches is very remarkable. I have 

 named the genus in honour of the discoverer of one species. Dr. Irving, R.N., for some 

 months resident at the Missionary Station of Abeokuta, where he fell a \dctim to the 

 climate. 



1. Irving-ia tenitifolia (H. f.) ; foliis membranaceis oblongis obovato-oblongisve obtusis, 



paniculis laxe ramosis ramis divaricatis tenuibus, floribus l^revi-pedicellatis sub- 

 cymosis, stylo brevi. 

 Hub. Abeokuta, beat. Dom. Irving, M.D. 



2. Irvingia Barteri (H. f.) ; foliis cpriaceis ovato- oblongis ovato-lanceolatisve obtuse 



aciuninatis obtusisve obliquis utrinque nitidis, paniculis parvis paucifloris subfasci- 



culatis, stylo filiformi. 

 Hab. Prince's Island, beat. Dom. Barter. " Wild Mango," ab Anglis dicta. 

 Arbor 40-pedalis. Fructus edulis [Barter). 



3. Irvingia Smithii (H. f.) ; foliis coriaceis ovatis ovato-cordatisve acutis obtusisve 



ssepissime obliquis pallidis superne nitidis, paniculse ramis elongatis pedicellisque 



divaricatis, floribus racemosis, stylo brevi. 

 Hab. Ad ripas fluminis Congo, beat. C. Smith ; et flum. Niger, prope Nupe, Barter. 

 Arbor 40-pedalis, ad ripas fluminum. Flores pallide flavi, odori. Fructus magnus, drupaceus, ab simiis 



valde dilectus [Barter). 



Nat. Ord. TEREBINTHACE^. 



Subordo ANACARDIEiE. 



Mangifera Kamanga (Biume) ; foliis petiolatis obovato-lanceolatis apice subacutis basi 

 angustatis 6-12" longis 2-5" latis rigidis, nervis crebris validis patentibus utrinque 

 prominulis, panicula terminal! elongata ramis suberectis crassis puberulis, floribus 



