SUPPLEMENT. 
SYNOPTICAL TABLE OF THE BRITISH PLANTS, 
ARRANGED ACCORDING TO THE NATURAL ORDERS. 
CLASSES. 
i. VaSCULARES. De Cand. 
2, CELLULARES. De Cand. 
CLASS I. VascuLars&s. 
Substance of the plant composed of cellular tissue, woody fibre, and spiral vessels. 
Leaves formed with parenchyma, and yeins, consisting of woody fibre and spiral 
yessels. Epidermis with cuticular pores. Flowers consisting of floral enyelopes, 
stamens and pistilla. Seeds distinctly attached to a placenta, covered with a testa, 
and containing an embryo, with one or more cotyledons; germinating at two fixed 
points, yis, the plumule and radicle.—Lindley. 
SUB-CLASSES. 
]. DicoTYLEDONS, oR EXOGENOUS PLANTs. 
2. MoNocoTYLEDONES, OR ENDOGENOUS PLANTS. 
1, Dicotyledones, or Exogenous Plants. 
Trunk composed of two parts, wood and bark; each increasing in width by layers 
deposited in inyerse directions. The wood consists of a central medulla (pith), and 
medullary productions radiating through the new ligneous strata: of these strata the 
older (perfect wood) are hard and internal; the newer (alburnum) are soft white and 
external. The bark is covered by an epidermis, and consists of layers of cellular 
tissue, the older (true bark) being external, the younger (liber) internal. Leaves with 
branching and anastomosing veins. Flowers distinct, symmetrical, generally arranged 
in quinary numbers. Embryo usually with two opposite cotyledons, rarely more, and 
then yerticillate—De Cand. 
2. Monocotyledones, or Endogoneous Plants. 
Stems destitute of a central pith, medullary rays, or true bark, composed of scattered 
fibres, and not arranged in concentric circles; harder on the outside than in the 
centre ; usually cylindrical when a terminal bud is deyeloped; increasing in width 
A 
