472 MR. G. BENTHAM ON AFRICAN ANONACE^E. 



convexus. Stamiua numerosa, connectivo ultra loculos crasse capitate. Gynsecii 

 carpella phirima, glabra, oralis 2 ventralibus superpositis. StyH breviter lineares. 

 On the beach at Fernando Po (G. Mann, who describes it as a shrub of 25 feet, with greenish-white 

 flowers). 



3. O. ? PLATYPETALA, sp. n. ; ramuKs novellis petiolis pedunculisque tenuissime puberulis, 



ceterum glabra, foliis obovali-ellipticis oblongisve breviter acuminatis submembra- 

 naceis, pedicellis solitariis gracilibus, petalis exterioribus late ovatis patentibus. — 

 Prsecedenti primo intuitu simiKs, sed non omnino glabra, nee glaucescit, foHa 

 tenuiora, sepala majora ovata obtusa, et petala exteriora multo latiora, 6-7 lin. 

 longa. 

 A small tree on the Bagroo River (G. Mann). 



I have some hesitation in giving a name and diagnosis to this plant, the specimen 

 being insufficient to enable me to examine the internal structure of the carpels. It 

 is, however, so very similar in many respects to O. gracilipes that I cannot but feel 

 convinced that it is a congener, although the form of the petals does not admit of 

 uniting it in the same species. 



4. O. PATENS, sp. n. ; glaberrima, foliis elliptico-oblongis lanceolatisve acuminatis basi 



acutis, pedicellis fasciculatis, petalis exterioribus oblongis patentissimis. — Arbor elata, 

 ramis horizontalibus. Ramuli etiam juniores uti tota planta glaberrimi. Polia 

 majora 6-7 poll, longa, 1^ poll, lata, inferiora cujusve ramuli breviora et latiora, v. 

 rarius omnia latiuscule oblonga, demum subcoriacea et nitidula tenuiter penninervia 

 et reticulato-venulosa, basi in petiolum 2-3-linearem canaliculatum angustata. 

 Pedicelli f-1-poUicares, graciles, 2-6-ni, axillares v. laterales, ramulis floridis in- 

 terdum brevissimis 1-2-foliatis v. subaphyUis pedunculos communes simulantibus. 

 Bractese nullse v. caducissimse. Sepala vix lineam longa. Petala exteriora demum 

 6 lin. longa, 2 lin. lata, obtusiuscula, prope basin parum angustata, interiora 1\ lin. 

 longa, circa genitalia arete conniventia. Stamina ad 30, connectivo supra loculos 

 crasso dilatato. Torus fere planus, glaber. Gynaecii carpella circiter 10, glabra, 

 stigmate depresso-capitato. Ovula 2, e basi erecta, septo vertical! separata. Baccse 

 in specimine nondum matures oblique subglobosse, 3 lin. -diametro, stipite brevi 

 crasso, intits 2-loculares, loculis coUateralibus 1-spermis. 

 Forests at Eppah on the Niger {Barter). On the banks of the Bagroo River (G. Mann). 



The vertical septum separating the ovules and seeds is an anomaly we have not 

 observed in other Anonacese, but which both Mr. Pitch and myself have found at the 

 time of flowering as well as when the fruit is further advanced. 



Plate LI. Fig. 1. Flower, magnified. Fig. 2. The same with the six petals removed, the sepals 

 remaining. Fig. 3. One of the inner petals. Fig. 4. Anther, inner view. Fig. 5. The same, side 

 view. Fig. 6. Torus and gynsecium. Fig. 7- Carpel of the gyna^cium, back view. Fig. 8. The 

 same, side view. Fig. 9. The same, vertical section. Fig. 10. The same, transverse section. 

 Fig. 11. Half-ripe carpel. Fig. 12. The same, vertical section. Fig. 13. The same, transverse 

 section. 



