2l6 Dr. Francis Hamilton's Commentary 



the two orders, so that it is scarcely possible to say, where the 

 one ends, and the other begins. It must however be observed, 

 that these Serratulce, which have a receptacuUim nudum, and 

 which compose the genus now called Vernonia, are by Jussieu 

 (Gen. Plant. 195.) considered as more nearly allied to Eupato- 

 rium than to the Cinarocephalce. 



Willdenow on the authority of Swartz has chosen to give the 

 genus Verno7iia a character (pappus duplex, exterior paleaceus, 

 interior capillaris) by no means applicable to the Bacckarioides 

 of Linnaeus ; as I have already mentioned, that this great natu- 

 ralist states " semina pilis simplicibus coronata." I must further 

 remark, that at least another of the Vernonias is in a similar pre- 

 dicament; for it is included in the genus Suprago of Gaertner 

 (S. glauca GcErtn. de Sem. ii. 402 ; Vernonia glauca JViltd. Sp. 

 PL iii. 1633.), the character of which is perfectly applicable to 

 the Cattu Schiragam, and in which no mention is made of the 

 exterior leafy pappus. We might indeed suspect, that Willde- 

 now had erroneously referred the Cattu Schiragam to a wrong 

 genus, the plants included in which have really an exterior leafy 

 pappus ; but this is rendered doubtful by a remark of M. Poiret 

 (Enc. Meth. viii. 496. )» who, speaking of this outer pappus of 

 the Vernonias, says, " J'ignore si la premiere (I'aigrette ext6- 

 rieure) est peii sensible ou caduque, je ne I'ai point remarquee 

 dans les especes que j'ai examinees :" and it must be remarked, 

 that M. Poiret had seen living plants of the three first species of 

 Vernonia described by Willdenow, while the authority of the 

 latter, respecting the only other species, is contradicted by that 

 of Linnaeus. 



This error in Willdenow, although continued in the Hortus 

 Kewensis (iv. 502.), probably induced Dr. Roxburgh (Hort. 

 Beng. 60.) to reject the Cattu Schiragam as a Vernonia, and to 

 return to the arrangement of Morison, calling it Serratula an- 



ihelmintica ; 



