583 



Class 10. 



53. dehor acea, a most natural order, the Composites, 

 semiflosculosa, ord. 49. sect. 2. of Linnaeus. The es- 

 sential character of this 10th class is adopted from the 

 artificial system of Linnaeus, the united anthers, anthem 

 connata; a circumstance never adverted to by any syste- 

 matic writer before him. Yet it is not absolutely without 

 exception; witness the genera of Kuhnia, Sigesbeckia, and 

 Tussilago. 



54. Cinarocephala answer nearly, at least in principle, 

 to the Composite capitate?, ord. 49. sect. 1. 



55. Corymbiferte embrace all the remaining Composite, 

 including the last section of that order, nucamentacea, 

 some of which Jussieu terms Corymbiferce anomalce ; such 

 as Iva, Parthenium, Ambrosia, Xanthium, and even Ne- 

 phelium. 



Class 11. Distinguished from the last Class, only by 

 having separate anthers. 



56. Dipsacecz consist of some of the Linnaean Aggre- 

 gate, ord. 48. See our remark under Jussieu's 26th 

 order. There is ample room for speculation on the affi- 

 nities and distinctions between these Dipsacecz, the Pro- 

 tea, ord. 26th, and the whole of Jussieu's 10th class last 

 mentioned. Their contemplation involves questions at 

 any time sufficient to excite a botanical war — such as, 

 what belongs to the inflorescence, and what to the flower? 

 what is a calyx, and what the crown of the seed ? what 

 is superior and what inferior insertion ? what a simple and 

 what a compound flower? 



57. Rubiacece, avast and important order, composed, 

 not only of the Linnaean Stellata, ord. 47, but also of 

 numerous tribes of shrubby plants, very few of whicii had 

 been referred to the Stellata, and many of them had not 

 fallen under the notice of Linnaeus at all. Jussieu shines 

 in the elucidation of this order, and has well indicated 

 certain characters in the habit, especially that of the in- 

 trafoliaceous sheathing stipulas. 



