28 THE CUTICLE. 
being a simple homogeneous mass of vegetable tissue, and 
grow like buds on the plant, not being preceded by stamens 
and pistils or a flower. 
Flowerless plants are Acotyledonous, Acrogenous (§ 
ing by simple addition to the external part of their subs 
stance), and mostly cellular ; some few are vascular 
Flowering plants are Cotyledonous, Endogenous or xd 
nous (see next paragraph), and all are vascular. 
Flowering plants are divided into two great classes : 
1. MonocotyLepons or 2. DicoTyLEDONS 
ENDOGENS. EXoGENS. 
The Monocotyledons (monos, one) have only one cot; 
don or seed-lobe, and have a peculiar manner of grov 
termed Enpocenovs. Palms, Aloe, Grasses, Rushes, 
Tulips, Hyacinth, Crocus, Iris, illustrate the Monoc 
donous tribe. ile 
The Dicotyledons (dis, two) have two cotyledons or 
lobes, (as in the seed of the common pea or bean,) 
__ erease in diameter in a manner termed ExocEnovus. 
_ Ash, and all the trees of this country, Lupin, Fe 
Poppy, Wallflower, Hemlock, Crowfoot, illustrate 
_ eotyledonous tribe. 
72. All the organs of plants are, widk ca or two 
exceptions, covered by a thin layer, termed the 
somewhat resembling the scarf-skin or cuticle of 
This, which is common to them all, must be des ‘ 
proceeding to the description of the individual 
THE CUTICLE. 
73. This is a layer of cellular tissue, 
nous appearance, the cells being condensed 
compact, so that there is scarcely any 
found on all parts of the plant excepting n 
a) or 7 
