PART 11. 



DESCRIPTIVE BOTANY. 



Class. I. EXOGENS ob DICOTYLODOXS. 



Trunk consistinij of bark, wood, and pith distinct, 

 more or less conical, incrcasinij: by an annual deposite 

 of new woo<l and cortical substance between the wood 

 and bark. Leaves attached to the stem by articulation, 

 their veins, and those of the floral envelops reticulated. 

 Embryo with two or more opposite cotylodons. Seeds 

 nnatro|X)us. 



fTi .. -•-" -~- '' 'istineiiish the plants of this classby Ihorcticulatpd veins 

 f^ • lis ; ty the presence of bark and pith, ll includes all 



Subclass I. POLYPETALAE. 



Flotrers generally dichlamydcous. Calyx consisting of 

 several distinct sepals. Petals several, distinct, hypogynous, 

 rarely uniting, sometimes wanting. 



Order I. RANUNCULACE.E. {Crow-foot irihe,) 



Sepals 3 to 0, usually 5, deciduous, a?stivation imbricate 

 (except clematis, which is valvate). Petals 3 to 15. Anlkers 

 adnate. Carpels numerous, or united into a single pistil. 

 Seeds nnatropous, erect or pendulous. Euihryo minute. Al- 

 humen large, corneous. Plants generally with acrid, transpa- 

 rent juice. 



Gents I. CLEMATIS. 



Coral none. Calyx 4 to 6 leaved, colored. Anthers linear, 

 extrorse. Fruit an achenium, with long plumose tails, except 

 in Crispa. 



PART II. 1 



