TAXONOMY. 



165 



School of the Jardin des Plantes in Paris is arranged ; and, finally, the Succession of 

 the Families established by A. de Jussieu, which we have adopted for our ' Flora of 

 Gardens and Fields,' and which we shall follow in the present work. 



[In this, the English edition, the system of De Candolle is followed ; of which 

 a synopsis will be given at the end of the work. ED.] 



ARRANGEMENT OF A. P. DE CANDOLLE. 



Polypetalous corolla, and stamens inserted 



on the receptacle 



Polypetalous or monopetalous corolla, and 



stamens inserted on the calyx . 

 Monopetalous staminiferous corolla, inserted 



on the receptacle ...... 



A single floral envelope, or similar calyx 



and corolla ...... 



Visible and regular fructification 

 Invisible or irregular ... 



CELLULAR* PLANTS, j Foliaceous expansions 

 or ACOTYLEDONS. \ No foliaceous expansions .... 



Exogens. 2 



Endogeus. 3 



I 



CLASSIFICATION OF M. AD. BRONGNIART. 



(The Families being enumerated in the description of the Classification of A. de Jussieu, we here confine 

 ourselves to the enumeration of the Classes.) 



. Vegetables deprived of stamens, pistil, and even of ovules. Embryo simple, 

 homogeneous, without distinct organs, usually formed of a single vesicle. 



AMPHIGENS. No axis or appendicular organs evident; growth peripheric; reproduction by naked 



spores. Alga;, Fungi, Lichens. 



ACKOGENS, Axis and appendicular organs evident ; stems growing at the extremity only, without 

 the addition of fresh portions at the base. Reproduction by spores covered by an integument, 

 but not adhering by a funicle to the walls of the capsules which contain them. Mttsdneee, 

 Filicinca;. 



PHANEROGAMS. Reproductive organs evident, formed of stamens, and of ovules, which are 

 either naked or enclosed in an ovary. Embryo compound, cellular, heterogeneous or formed of 

 many distinct parts. Old parts of the living stem increasing by the addition of new tissues. 



MONOCOTYLEDONS. Embryo with a single cotyledon. Stem composed of fibro-vascular bundles 

 scattered through the mass of the cellular tissue, not forming a regular circle; the living 

 stem not increasing by distinct concentric zones of wood and bark. 



' Provided with cells and vessels. 



2 The fibro-vascular bundles arranged in concentric layers, with the youngest outside. 



* The fibro-vascular bundles arranged without order, the youngest in the centre of the stem. 



4 Deprived of vessels, and composed only of cells. 



