10 



ON SYSTEMS AND CLASSIFICATIONS. 



useful in the present times, it would need great amendment. The 

 above enumeration of the classes renders any further explanation 

 unnecessary. 



Christopher Knaut has also chosen the fruit as the foundation of 

 his system, but with this difference, that he has taken into account 

 the number of the petals and the regularity of the flower. His 

 system has a great resemblance to the tirst of Ray. 



Boerhaave has constructed his system partly from that of Her- 

 mann, Tourueibrt, and Ray. He too has separated trees and plants. 

 The number of the capsules, of the petals, and of the cotyledons is 

 made use of. 



Ray conjoins fruit, flower, and external appearance, like his pre- 

 decessors. As his system has something peculiar, I shall here 

 detail it. 



Herb. 



Multisiliquse. 



Monopetalae. 



Di Tripetal*. 



Siliquosae. 



Leguminosae. 



Pentapetalae. 



Florifeiae. 



Stamineae. 



Anomalae. 



Arundinactae. 



28. Arbores, Apetalae. 



2. 



3. 



4. 

 b. 



6. 



7. 



8. 



9. ~ 



10. 



11. 



12. 



13. 



14. 



15. 



16. 



17. 



The old system of Ray has only twenty-five classes, and is conse- 

 quently more imperfect than this improved one. He still retains the 

 eld division of trees and plants. In the first class stand all ihe Fuci, 

 Zoophytes, and Corals. In the fifth all plants that have no petals : 

 in the sixth the semifloscular flowers; in the seventh the discoid and 

 radiate flowers that have pilose pappus ; in the eighth class are those 

 same flowers, but which have no pappus; and in the ninth class 

 stand all those capitated compound flowers which have a membra- 



Fructu umbilicato. 



uou umbilicato. 



sicco. 



siliquoso. 

 Anomalae. , 



