244 



EXOGENS. 



Menispermales. — Flowers monodicJdamydeous ; carpels superior, disunited; 



emhri/o surrounded hy abundant albumen. 

 CucuRBiTALES. — Floivers monodichlamydeous ; carpels inferior ; placentca 



jmrietal ; embryo loithout albumen, 

 Papayales. — Flowers dichlamydeous ; carpels superior, consolidated; 



placentce parietal ; embryo surrounded by abundant 



albumen. 



Sub-Class IL HYPOGYNOUS EXOGENS. 



Flowers § , ^y: $ § 9 ; stamens entirely free from tlie calyx and corolla. 



ViOLALES, — 

 CiSTALES. — 



m alt ales. 



Sapindales. 



gcttiferales. — 



Nymph ALES. — 

 Ran ALES. — 

 Berberales. — 

 Ericales. — 



RUTALES. — 



Geraniales. — 



SiLEXALES. 



Floicers monodichlamydeous ; placentce parietal or 

 ral ; embryo straight, with little or no albumen. 



Flowers monodichlamydeous ; placentce jjarietal or sutural ; 

 embryo curved or sjyiral, xmth little or no albumen. 



Flowers monodichlamydeous ; placentce azile ; calyx val- 

 vate in oestivation; corolla imbricated or twisted; sta- 

 mens definite or 00 ; embryo with little or no albumen. 



Flowers monodichlamydeous, unsymmetrical ; placentce 

 axile ; calyx and corolla imbricated ; stamens definite ; 

 embryo with little or no albumen. {Stamens rarely 00.) 



Flowers monodichlamydeous ; placentce axile ; calyx im- 

 bricated; corolla imbricated or twisted; stamens 00 ; 

 embryo with little or no albumen. {Stamens sometimes 

 definite in nuynber.) 



Flowers dichlamydeous ; placentce axile or sutural ; sta- 

 mens 00 ; embryo on the outside of a very hrge quantity 

 of mealy albumen. [A part have no albu7nen.) 



Flowers monodichlamydeous ; placentce sutural or axile ; 

 stamens 00 ; embryo minute, inclosed in a large quan- 

 tity of fiesliy or horny albumen. 



Floiaers monodichlamydeous, unsymmetrical in the ovary ; 

 placeyitce sutural, parietal, or axile ; stamens definite ; 

 embryo inclosed in a large quantity offieshy albumen. 



Floicers dichlamydeous, symmetrical in the ovary ; pla- 

 centae axile ; stamens definite ; embryo inclosed in a 

 large quantity of fieshy albumen. {Stamens occasion- 

 ally adherent to the corolla.) 



Flowers monodichlamydeous, symmetrical; placentce axile; 

 calyx and corolla imbricated, if present ; stamens defi- 

 nite ; embryo with little or no albumen. {Occasionally 

 <?2.) 



Flowers monodichlamydeous, symmetrical ; placentce 

 axile; calyx imbricated ; corolla twisted ; stamens 

 definite ; embryo with little or no albumen. 



Flowers monodichlamydeous ; placenta free, central ; 

 embryo external, curved round a little mealy albumen ; 

 carpels more thayi one, completely combined iJito a com- 

 pound fruit. [Some slightly per igy nous, others S 9 -) 



