METHOD OF CLASSING PLANTS. 



Plants are divided into 3 CLASSES. "| 



I. DICOTYLEDONS (Exogens) have Both have 



2 Cotyledons. J> Cellular, and 



II. MONOCOTYLEDONS (Endogens) j Vascular tissue, 

 have 1 Cotyledon J 



(Which contain all the Flowering Plants (Phanerogamous.) 



III. ACOTYLEDONS, (Cellulares), no Cotyledons. (Cellular 

 tissue only) : this Class contains all Flowerless Plants. 

 (Cryptogamia.) 



The two first CLASSES are divided in 6 SUB- CLASSES. 



Dicotyledons. 



I. SUB-CLASS. THALAMIFLOKS;. Petals several, distinct, 



and the Stamens distinct. Hypogenous. 



II. CALYCIFLORJE. Corolla and Stamens upon the Calyx. 

 Perigynous. 



III. COROLLIFLORJE. Corolla of one piece. Stamens free 

 from the Corolla, (hypogenous), or attached (epipetalous). 



IV. MONOCLAMYDEJE. Perianth single, or -wanting no 

 Corolla or Calyx. 



These (DICOTYLEDONS) contain more than 1130 plants. 



Monocotyledons. 



V. PETALOIDE^;. Flowers having a single perianth. 



VI. GLUMACE2E. Flowers without perianth ; but enclosed 

 within chaffy scales. 



MONOCOTYLEDONS contain less than 360 plants. 

 These VI. SUB-CLASSES are divided into 107 ORDERS. 

 The larger ORDERS are divided into TRIBES. 

 All ORDERS and TRIBES are divided into GENERA. 

 A GENUS contains one or more species. 



Thus the whole * Flora ' is classed, and the same method 

 will be followed in this work. 



