333 NORTH BRAZILIAN EUPHORBIACEiE. 



glands on each side. The flowers differ at once from those of Aparuth' 

 mlum in the number of stamens, which are indefinite, and always more 

 than twelve, instead of three only* These characters may be thus tech' 

 nically expressed : 

 ConceveihcB Fl. masc. in paniculam ramosam terminalem dispositi, secus 

 raraos divaricatos ad axillam bractese parvae crasse biglandulosse glo- 

 merati, sessiles v. brevissime pedicellati. Calyx valvatim 3-4-parti- 

 tus. Stamina pluriraa (ultra 12) filamentis liberis v. vix basi coalitis 

 calyce longioribus flexuosis, antheris parvis bilocularibus. 

 The Surinam plant of Hostmann's (n. 1261) referred by Steudel to 

 the C, Guianensis, appears to be a distinct species {G. Hostmanni), dif- 

 fering in the shorter petioles, more shining leaves, less pointed and 

 more cordate at the base, the more tomentose inflorescence, and espe- 

 cially by the style branched from the base, with the thick short branches 

 closely appressed on the ovary, instead of being entire and erect to near 

 half its length, as in 0. Guianensis, The male of Hostmann's plant is 

 nnknown. 



Some male specimens gathered by Mr. Spruce, in the Capoeiras at 

 Panure, on the Eio Uanpes, appear to belong to a third species, as 

 follows : 



C. latifoUa, sp. n. ; foliis amplis ovatis obtusis v. vix acuminatis, flori- 

 bus masculis 20-30-andris, — Jrhor gracilis, 15-pedalis. Ramuli 

 angulati et inflorescentise puhescentes. Folia forma fere Aparisthmii 

 macropJiylli, majora 11 poll, longa, 6 poll, lata, petiolo 3-pollicari, 

 penninervia, venis 2 infimis ad basin folii oppositis, omnibus subtus 

 proniinentibus, consistentia rigide membranacea, subtus in vivo al- 

 bido-purpurascentia in sicco rufescentia, utrinque praesertim ad venas 

 pilis minimis conspersa. Infiore^centia mascula C. Gtiianensis termi- 

 nalis ramosa. Flores glomerati ad axillam bractese parvae biglandu- 

 losae. Calyces globosi, valvatim 4-fidi. Stamina circa 30, filamentis 

 quam in C Guianensi brevioribus, Flores foeminei non visi. 

 There is a single female specimen of another plant, apparently allied 



X 



to Conceveiha^ but insufficient for description. 



Aparisthmium. 



This genus has the inflorescence of AlcJiornea and Stipellaria, but 

 the male flowers have only three stamens instead of eight ; the females 

 are tricarpellary, as in Stipellaria^ but the style is divided into three. 



