166 TAXONOMY. 



Albuminous. — Embryo accompanied by albumen. 



Perianth none, or sepals not resembling petals. Albumen farinaceous. Glumaceo!, Junccce, 



AroidecE. 

 Perianth absent or double, with sepals or petals. Albumen not farinaceons, Paiidanece, Phce- 



nicece, Lirioidece, 

 Perianth double, the inner or both petal-like. Albumen farinaceous, Bromeliacem, Scitaminece. 

 Exalbuminous. — Albumen wanting'. OrchidecB. Fluviales. 



DICOTYLEDONS. — Embryo with two opposite, or more (and then whorled) cotyledons. Stem with 

 fibro-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. 

 ANGI08FEEMS. — Ovules contained in a closed ovary, and fertilized through the medium of a 

 stigma. 

 Gamopetalous. —Petals united. 



Peeigyjtotjs. — Stamens and corolla inserted on the calyx. Ovary inferior, Campanulacece, 



Asteroidecs, Lonicerinece, Ccrffeineai (^RuhiacecB). 

 HYPOGYiiroiis. — Stamens and corolla inserted below the ovary, 



ANisoGYNOtrs. — 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. Asclepiadea, Convolmdacece, AsperifoUece, Salanece. 

 Auisostemonous. — Stamens partly abortive, four diijynamous, or two, Personata;, 

 Selacjinece, VerhenacecB. 

 isocfTNOTJs.^Pistil usually composed of a number of carpels equal to the sepals, Primu- 

 lacece,. Ericoidece, Diospyros. 

 DiAiA'PJiTALoVs. — Petals free or absent. 



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

 raEFECT FLOWERS, having petals, in most of the genera of each class. 

 Calj X usually persistent after iloweiiug. 



Poly steiiionoils.— Stamens usually indefinite in number. Guttiferce, Mahacea. 

 Oligosteraonous. — Stamens usually definite in number. CrotoninetB, PolygaUm, 

 Geraniacece, Terehintlmceee, H^pp-idece, JSscttUnecB, Celastrinece, Violacece. 

 Calyx falling, during or after flowering. 



Albumen absent, or very thin. Crucifeue. 



Albumen thick, fleshy or horny. Papaveracete, Beyberideoi, Magnoliacem, Ranim- 



milnceee. 

 Albumen double, the outer farinaceous. Nymphmacece. 

 IMPERFECT FLOWERS.— Corolla always absent. Piperacece, Vrticew, PollfgonecB. 

 PBEieYNOTJS. — Stamens and petals iuserfed on the calyx, 



Cyoloapermous.— Embryo bent around a farinaceous albumen, CaryophfUaceee, Cactacea. 

 Perispermous.— Embryo straight, in the axis of a fleshy or homy albumen. CrassUlacea:, 



Saxifrayets, Passijloreai, Hamamelidea>, UmheUiferce, SantalacetB, Asarinete. 

 Aperispermous.— Albumen wanting or scanty. Cucicrbitacece, (Enothera:, Dnphmcecs, 

 Proteacece, Phamnacem, Mtjrtncece, Rusacem, Leguminosm, Amentacea. 

 GYMKOSPEBMS.—Ovales naked, that is to say, not contained in a closed ovary and savmounted 

 by a stigma, but directly receiving the iufluence of the pollen. Coniferts, Cycadea. 



