Linncean and Natural Syste7ii$. 



55 



combining in a family all plants not only resembling each 

 other in appearance, but also in properties: for instance, the 

 Palms of Linnaeus, comprising Palms and their relatives, as the 

 Cocoa nut, Frogslut, &c, were all characterized as Farinaceous 

 diet ; the Pomacea, as Pear, Currant, &c, — Refrigerants. It is 

 only plants of the same family that can be grafted upon one an- 

 other : a knowledge of this fact will often save useless trouble ; 

 and not only so, but prove very advantageous in other respects. 

 It is said that in a recent voyage undertaken with a view of dis- 

 covering where the celebrated La Perouse was shipwrecked, 

 the whole of the crew was afflicted with a scorbutic complaint, 

 which was greatly relieved by feeding on an unknown plant of 

 the Cruciform family (which is, in all its branches, anti-scorbutic) 

 growing on the coast of New Holland, — a remedy which was 

 pointed out to them by the botanist attached to the expedition. 



Jussieu's system has 15 classes distributed into natural series, 

 in which are 100 orders, each defined by rather full definitions, 

 taken in the first place from the parts of Fructification, and 

 illustrated by secondary characters founded upon any other cir- 

 cumstance. As might be expected, there is at the end a large 

 assemblage of Genera not reducible to any of these orders : 

 though many have been since redueed, enough remains to show 

 the imperfection of any Natural System. The following are the 

 Classes and Orders somewhat modified ; they are given to con- 

 vey a general idea of his plan. Our work next year will be 

 founded on Lindley's Natural System, which we will defer enter- 

 ing more fully until then. 



JUSSIEU'S CLASSES. 



Acotyledones, 

 Monocotyledones, 



Dicotyledones,< 



Stamens hypogynous, 

 " perigynous, - 

 " epigynous, 



Stamens epigynous, - 

 apetalous, \ " perigynous, 

 " hypogynous, 



Corolla, hypogynous, 

 " perigynous, 



I " epigynous, 



I Stamens, epigynous, 

 polypetalous, \ " hypogynous, 



" perigynous 

 ^declines irrei-ular, - 



( anthers combined, 

 I anthers distinct, 



Class 

 1 



- 2 

 3 



• 4 

 5 



- 6 

 7 



- 8 

 9 



10 

 11 

 12 

 13 

 14 

 15 



