LINDLEY’S METHOD. 199° 
LINDLEY’S METHOD. 
_ 687. Dr. Lindley, in his “* Artificial Analysis of the Or- 
ters,” prefixed to his Natural System of Botany, gives the 
llowing arrangement of them. The whole vegetable king- _ 
tom is divided into five classes :— 
‘ 
Crass I. ExoceEns, or DicoryLeponovus FLowERING 
PLanTs. 
_ Leaves reticulated. Stem with wood, pith, bark, and medullary 
rays. Flowers usually with a quinary division. Seeds in a pe- 
‘carp. Cotyledons two or more, opposite. 
Cxass IL. Gistkcebensis: 
: Leaves with parallel or forked veins, Stem with wood, pith, bark, 
and medullary rays. Floral envelopes absent. Seeds naked. 
Cotyledons two or more, opposite. 
Crass III. Expocens, or MonocétyLeponous 
Fiowerine PLants. 
Leaves with parallel veins. Stem without any distinction of 
wood, pith, bark, and medullary rays. Flowers usually with 
@ ternary division. Seeds ina pericarp. Cotyledons solitary, 
°r if two, unequal and alternate with each other. 
Crass IV. Raizanrtus. Rae 
Leaves, if any, seale-like. Stem homogeneous, with scarcely any 2 a 
trace of a vascular system. Flowers with sexes. Seeds having — 
no embryo, but consisting of a homogeneous sporuliferous mass. 
Ciass V. Acrocens, or AcoTYLEponous, or Cayprocamic 
PLANTs. eee 
Sexes absent. Sporules in liew of leaves, 
