OF ARTS AND SCIENCES. 51 



7. P. ? LUCiDA (sp. nov.) : glaberrima ; foliis oppositis ovalibus seu 

 ovali-oblongis subcoriaceis supra lucidis creberrime penninerviis ; 

 cymis longe pedunculatis multifloris ; ovariis fere discretis. 



AMARORIA, Nov. Gen. Simarubacearum, 



Flores monoici vel dioici. Masc. Sepala 6. Petala nulla. Sta- 

 mina 6, petalis opposita : antherse subsessiles. Discus carnosus, pro- 

 funde trifidus, lobis bifidis. Fcem. Sepala 4- 5, parva, persistens. 

 Petala 4-5, linearia, carinata, reflexo-patentia. Rudimenta staminum 

 petalis numero dupla, minima, sub disco incrassato 8 -» 10-crenato in- 

 serta. Ovarium simplex, ovoideum, uniloculare, uniovulatum, vertice 

 stigmate sessili maximo depresso reniformi crasso obtectum. Ovulum 

 sub apice loculi appensum subanatropum. Drupa sicca, nuciformis, 

 ovoidea, subcompressa ; epicarpio tenui ; putamine osseo. Semen 

 amphitropum, exalbuminosum. Cotyledones ovales, planae ; radicula 

 brevissima supera. — Arbuscula Soulamece amarce facie et affinis. 



Amaroria soulameoides. — Feejee Islands. 



BRACKENRIDGEA, Nov. Gen. Ochnacearum. 



Calyx persistens. Antherse Iseves, longitudinaliter dehiscentes. 

 Stigma leviter quinquelobum. Ovulum circa processum e fundo 

 ovarii assurgentem curvatum, hippocrepicum. Semen angustum, 

 circinnatum. Embryo semini conformis, gracilis ; cotyledonibus 

 anguste linearibus ; radicula centripeto-infera. Flores umbellato- 

 fasciculati. — Csetera Gompliicz. 



1. B. NiTiDA, sp. nov. — Feejee Islands. 



2. ? B. HooKERi. — Gomphia Hookeri, Planch. — Penang. 



The genus is dedicated to the zealous Assistant Botanist of the Ex- 

 pedition, Mr. William D. Brackenridge. 



ONCOCARPUS, Nov. Gen. Anacardiacearum. 



Flores dioici. Calyx cupularis, 5-dentatus. Petala 5, hypogyna, 

 oblonga, sestivatione valvata. Masc. Stamina 5. Gyna3cium nullum. 

 Focm. Stamina nulla } Ovarium pyramidatum, basi 5-lobum, stig- 

 mate sessili truncate terminatum, uniloculare. Drupa depressa, dif- 

 formis, torosa vel lobata, toro incrassato carnoso obconico insidens ; 



