476 BOTAN 7 Y. 



two great divisions,, viz. I. CELLULAR or ACOTYLEDONOUS, that is, 

 composed of cellular tissue destitute of vessels, with an embryo 

 without cotyledons or seminal leaves. II. All other vegetables are 

 VASCULAR or COTYLEDONOUS, that is, composed of cellular tissue 

 and vessels, with an embryo provided with one or many cotyledons. 

 The First Division forms two groups, the one comprehending cellular 

 plants with a foliaceous appearance and known sexes as the Musci 

 and Hepaticce ; and the other aphyllous plants, or those destitute 

 of foliaceous expansions, and without known sexes, as the Lichenes 

 the Hypoxyla, the Fungi, and the Algce. The Second Division 

 forms also two groups ; 1. Exogenes, or dicotyledonous plants which 

 have vessels in concentric circles, of which the youngest are ex- 

 terior, and in which the embryo has seminal leaves or cotyledons, 

 either opposite or verticillate : And 2. Endogenes, or Monocotyle- 

 donous plants which have vessels disposed in fasciculi, of which the 

 most recent formed are in the centre of the stem, and provided with 

 solitary or alternate cotyledons. 



The Exogenes have either a distinct calyx and corolla, and are 

 then said to have a double perianth ; or their calyx and corolla form- 

 ing but one envelope, they are then said to have a simple perianth. 

 In the first case the families which have a double perianth, or a co- 

 rolla with one or many petals, and these simple or compound corollse 

 placed under the pistil or around it, are termed hypogynous or pe- 

 rigynous to indicate these two dispositions. 



The Endogenes are also divided into two series, the first com- 

 prehending plants of which the fructification is visible and regular, 

 and termed Phanerogamous ; the second, including those of which 

 the fructification is concealed, unknown, or irregular, Cryptogamous. 



The Dicotyledonous plants with a double perianth, of which the 

 corolla is formed of many pieces, and not adhering to the calyx, but 

 attached to the receptacle below the pistil, include the following 

 families : viz. 



Ranunculaceae, Dilleniaceae, Magnoliaceae, Annonaceae, Menispermaceae, Berber- 

 ideas, Podophyllaceae, Nympheaceae, Papaveraceae, Fumariaceae, Cruciferae, Cappa- 

 rideae, Flacourtianeae, Bixineae, Cistineae, Violarieae, Droseraceae, Polygaleae, Treme 

 randreae, Pittosporeae, Frankeniaceae, Caryophylleae, Lineae, Malvaceas, Bombaceae, 

 Byttneriaceae, Tiliaceae, Elaeocarpeae, Chlenaceae, Ternstroemiaceae, Camellieae, Ola- 

 cineaa, Aurantiaceae, Hypericineae, Guttiferse, MarcgraviaceaB, Hippocrateaceas, Ery- 

 throxyleae, Malpighiaceae, Acerineae, Hippocastaneae, Rhizoboleae, Sapindaceae, Me- 

 liaceae, Ampelideaa, Geraniaceae, Tropceoleae, Balsamineae, Oxalideae, Zygophylleae, 

 Rutaceae, Simaroubeaa, Ochnaceae, Coriarieae. 



The Endogenous plants having flowers with a double perianth, 

 but the petals inserted on the calyx, comprehend the following 

 families : 



Frangulaceae, Samydae, Zanthoxyleae, Juglandeae, Terebinthaceae, Leguminosae, Ro- 

 saceae, Salicariae, Melastomeae, Myrtineae, Combretaceae, Loaseae, Onagrariae, Ficoidae, 

 Portulaceae, Nopaleae, Grossulariae, Crassnlaceae, Saxifrageae, U mbelliferae, Araliaceae. 



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