ANALYTICAL KEY 



TO THE ORDERS OF ALL THE PLANTS DESCRIBED IN THIS WORK. 



Series I. PH^NOGAMOUS or FLOWERING PLANTS, those 

 producing real flowers and seeds. 



Class I. DICOTYLEDONOUS or EXOGENOUS PLANTS. 



Stems formed of bark, wood, and pith ; the wood forming a zone 

 between the other two, and increasing, when the stem continues from 

 year to year, by the annual addition of a new layer to the outside, 

 next the bark. Leaves -netted-veined. Embryo with a pair of opposite 

 cotyledons, or in Subclass U. often three or more in a whorl. Parts of 

 the flower mostly in fours or fives. 



Subclass I. ANGIOSPERM^. Pistil consisting of a closed ovary 

 which contains the ovules and the seeds. 



Division I. POLTPETALOUS : the calyx and corolla both present ; 

 the latta: oi separate petals. 



A> Stamens numerous, at least more than 10, and more than twice the sepals. 

 1, Caii/x entirely free dnd sdparatifiom the pistil or pistils. 



Pistils numerous but cohering over each other in a solid Page 



mass on an elongated receptacle. . . . Magnoliace^, 48 



Pistils numerous, separate, but concealed in a hollow receptacle. 



Leaves opposite, entire : no stipules. . . . Caltcanthaoe^, 162 



Leaves alternate, with stipules. .... Eosa, in Eosace.si, 146 



PistUs several, immersed in hollows of the upper surface 



of a large top-shaped receptacle. Nelumbium, in NTMPH^ACEiE, Hi 

 Pistils more than one, separate, not enclosed in the receptacle. 



Stamens inserted on the calyx, distinct Eosacb^, 146 



Stamens united with the base of the petals, monadelphousv Malvace^, 98 

 Stamens inserted on the receptacle. 

 Filaments much shorter than the anther : trees. . . Anonacex, 50 

 Filaments longer than the anther. 

 Flowers dioecious : twiners with alternate leavesi MenispekjUace^, 51 

 Flowers perfect : if climbers, the leaves opposite. 

 Leaves not peltate : petals deciduous. . . EAN-ijNcnLACE,E, 34 

 Leaves peltate : petals persistent. Brasenia, in Nyhpsmaos^, S4 



