E UPHORBIA OEM. 



13'J 



VI. DICHAPETALUM SERIES. 



iJiclni/JctaliWi [Cliaillctia) tox 



Dichajwtalum^ (figs. 221-225), long desiguatecl under the name 

 of CJiailletia^ and of which a distinct family has been made, because 

 the flowers are often hermaijhi-odite, must be considered as the 

 highest in organisation of the Eii- 

 2'>horUacea} with biovulate ovary cells. 

 They are sometimes polygamous. In 

 those flowers which combine both 

 sexes a receptacle is seen (frequently 

 convex), bearing a double perianth, 

 an isostemonous androceum and a 

 superior gynaeceum. The calyx is 

 formed of five unequal sepals, free 

 or united below, quiucuncially im- 

 bricated, larger and more mem- 

 branous, as they are more interior in 

 prai^floration, and the corolla, of five 

 alternate petals, more or less deeply 

 divided above into two spoon- or 

 hood-shaped lobes, slightly imbri- 

 cated or iuduplicate in the bud. The 

 andi-oceum is formed of five sta- 

 mens, alternate with the petals, and 

 with a like number of hypogynous 

 glands, free or united, usually bifid. 

 Each stamen is composed of an hypo- 

 gynous filament and an anther, the 

 two Lutrorse cells of which, dehis- 

 cing longitudinally, are applied on the internal surface of a thick, 

 glandular, coloured connective. The gyngeceum is composed of an 

 ovary with two or three cells, surmounted by a style divided 



Fig. 221. Floriferoiis branch. 



' Dir.-Tn. Nnv. Gen. el Spec. 78 (1806).— 

 H. Bn. in Adansonia, xi. 102, t. 9, fig. 7-9. — 

 LeiKosia Dup.-Th. op. cit. 79. — SijiiiplniUunthtis 

 Vahl, in Natnrist. l?ilsk. vi. 80 (1810).— 

 Chailletia DC. in Ann. Mm. xvii. (1811), 153, 

 t. 1, fig. 1 ; ri-od/r. ii. 57.— TuRr. in Diet. Sc. 

 Ka'. Atl. t. 247.— Endl. Gen. n. 6768.— B. H. 

 Gen. 341, n. 1.— H. Bn. in Payer Fam. Nal. 



SOT.— Moacnrm RoXE. F/. Iiul. ii. C9,— II. Bn. 

 Et. Gen. FuphoihidC. 587. — M. Aug. in DC. 

 Prudr. XV. p. ii. 227. — ? Quilesin Blanco, Fl. dc 

 Filipp. 176. — Mestiitex SoLAND. M.SS (ex. ]{. Bu. 

 Conyo, U2).~JF(il/icnliei!/ia R. Bu. in ll'nl/. Cat. 

 n. 4332 (nee Bl. nee Schhau. nee Sciium.). — 

 riappertia Reichii, Consp. n. 3824 (ex Endl.). 



