166 TAXONOMY. 



Albuminous. Embryo accompanied by albumen. 



Perianth none, or sepals not resembling petals. Albumen farinaceous. Gluinticeff, Junccff, 



Aroidece. 

 Perianth absent or double, with sepals or petals. Albumen not farinaceous. Pundnnccc, Phos- 



niceff-, Lirioideee. 



Perianth double, the inner or both petal-lik.e. Albumen farinaceous. Bromeliaccfe, Scitaminea-. 

 Exalbuminous. Albumen wanting. Orckideee, Flwialcs. 



DICOTYLEDONS. Embryo with two opposite, or more (an.d then whorled) cotyledons. Stem with 

 fibre-vascular bundles forming a cylinder around a central pith, separable into an inner woody 

 zone and an outer bark zone, and increasing by concentric layers. 

 ANGIOSPEIiMS. Ovules contained in a closed ovary, and fertilized through the medium of a 



stigma. 

 GAUOi'ETALOL's. Petals united. 



PERIGYNOUS. Stamens and corolla inserted on the calyx. Ovary inferior. Campimulaceee, 



Asleroidecc, Lonicerinece, Coffeinea: (Rubiaceai). 

 HYFOGYNOVS. Stamens and corolla inserted below the ovary. 



ANISOOYXOVS. Pistil composed of a less number of carpels than there are sepals. 



Isostemonous. Number of stamens equal to the divisions of the corolla, and alter- 

 nating with them. Aadepiackee, Convolculacece, Anperifoiiea, Soianeee. 

 Anisostemonous. Stamens partly abortive, four didynamous, or two. Personatrr , 



SelaffinetP, 1 'crbcnaccte. 

 ISOGYXOUS. Pistil usually composed of a number of carpels equal to the sepals. Priinu- 



laceat, Ericoidea, Dioxpyros. 

 DiAUTKTALOus. Petals free or absent. 



HYPOGYNOUS. Stamens and petals independent of the calyx, inserted below the ovary. 

 PKKFECT FLOWKRS, haiving petals, in most of the genera of each class. 

 CaUx usually persistent after flowering. 



Polystemonous. Stamens usually indefinite in number. Guitifirft*, Malcacccp. 

 OligostemonoTis. Stamens usually definite in number. Crotoninca, Puli/t/alcff, 

 Gertmiacea, TerMntAac&B, Henperitlva', ^EtcaKnetf, Celastrinece, Violacc<c. 

 C'alyx falling, during or after flowering. 



Albumen absent, or very thin. Cmciferte. 



Albumen thick, fleshy or horny. Papaveraeea, lierberidea, Maytioliacece, Rannii- 



ciilncccc. 



Albumen double, the outer fiirinaceous. Nyniphccacetc. 



IMI'KKKKCT FLOWERS. Corolla always absent. l*iiyer(icece,Vrticea;, Pulyyonea. 

 PERIGYNOUS. Stamens and petals inserted on the calyx. 



Cyclospermous. Embryo bent around a farinaceous albumen. CaryophfUacete, Cat-diet tr. 

 Perispermous. Embryo straight, in the axis of a fleshy or horny albumen. 



Sojrifrayetc, Passiflon-te, Ildiiuinielidecc, UmbeUifei-tf, tiantalacea, Aaanneee. 

 Aperispermous. Albumen wanting or scanty. Ciicurbitacece, (Enothera, 



J'roteofeee, RkamnocetB, Myrtaeea, Rusacejp, LeguminoM, Antentaceee. 



(iVMNOSPERMS. Ovules naked, that is to say, not contained in a closed ovary and surmounted 

 by a stigma, but directly receiving the influence of the pollen. Conifera, Cycwktc. 



