F li O R A 



STATE OF NEW-TORE. 



DIVISION I. FLOWERING or PHJINOGAMOUS PLANTS. 



Plants furnished with flowers (consisting essentially of stamens and 

 pistils), and producing seeds. 



CLASS I. EXOGENOUS or DICOTYLEDONOUS PLANTS. 



Stem with distinct bark and pith, with an intervening circle of woody fibre ; the 

 latter increasing in diameter by the annual deposition of new layers of wood 

 on the outside, forming concentric zones, which are traversed by medullary 

 rays from the pith to the circumference ; the bark growing by new layers 

 within. Leaves commonly articulated to the stem 5 the veins, and those of 

 the floral envelopes branching and reticulated. Sepals and petals most 

 commonly in fours and fives, very rarely in threes. Ovules produced within 

 an ovary, and fertilized by the action of pollen through the medium of a 

 stigma. Embryo with two opposite cotyledons. 



Subclass I. Polypetalous Exogenous Plants.* 

 Floral envelopes consisting of both calyx and corolla ; the petals distinct. 



• In this subclass are iiicladed a few apctalous genera and species, and also some in which the petals are united ; while 

 there arc excluded from it a small number of plants in which the petals arc distinct to the base : for it must bo remembered 

 that the subdivisions of our classes are to a considerable degree artificial ; and in a natural arrangement, plants mut^t not 

 bo separated which agree in important cliaractcrs, and only differ in minor points. 

 [Flora.] 1 



