Mr Arnott's Tour to the Pyrenees. 25S 



As far as I have examined, I think that several of the per- 

 ennial species come under the reformed character * as much as 

 those enumerated, — indeed, I think all those with herbaceous 

 stems, that belong to De Candolle''s first subsection, with the 

 exception of A. gnapJialodes and A. petahdes. With regard to 

 the sufFrutescent species, I feel every desire to separate them 

 from the others ; but I have not yet been able to find a cha- 

 racter in which I dare put any confidence even for a subgenus. 

 A. alpesire, tortuosum^ orientale, Gemonense and sawatile, seem 

 all of them to agree nearly with Mr Brown's character : I say 

 nearly, for in some the funiculi, though nearly equidistant from 

 the style in the same loculus, are scarcely opposite to those in 

 the other loculus ; but in all these, though some of them be de- 

 scribed as having only one seed in each loculus, I find constant- 

 ly four funiculi and ovula. In A. argenteum, however, and in 

 A. Corskum^ Dub. (which Ph. Thomas brought from Corsica, 

 and distributed under the name of A. Salzmanni, and which I 

 consider scarcely distinct from A. Bertolonii^ but of this my 

 own specimen is not in fruit), I find truly one seed in each lo- 

 culus, alternating with that in the other, both equally distant 

 from the base of the style, and without any trace of a second 

 funiculus or ovulum, precisely as in Koniga maritima. What 

 of A. murale as is in my herbarium is not in fruit ; but I have 

 the authority of Professor Ball^is for saying, that, upon cultiva- 

 tion, this and A. argenteum prove to be the same species. In 

 both, I perceive from my notes, the seeds have a very small 

 margin. When I had an opportunity of examining A. obtusifo- 

 Hum and A. atlanticum, both of which I at the time considered 

 to be too closely allied to A, Bertolonii (although A. atlanticum 

 has the silicules decidedly emarginate, and the flowers in a ra- 

 ceme, whilst in the other two, the silicules are never notched, 

 and the flowers form a corymbus), I did not pay attention to 

 the situation of the funiculi. In a specimen marked " A. aU 



• The reformed character is, " Alyssum : Silictda sui)rotunda^ disco con^ 

 vexo. Umbo compressor apice retuso, loctUis dispermis, funicuiis bast septo adnoHs et 

 post tapsum seminum persistentibus, supra liberis et cum iisdem deciduis^ in diversis 

 ioculis oppositis, in eodem a siyli basi cequidistantibus : Fetalis emarginatis: FiiametUis 

 omnibus nonnuliisve appendicuiatis in speciebus omnibus prceter A. calycinum in 

 quo Jilamenta JUiformiu simplicia sunt et yiandularum loco setuite quatxi&r fiiamenta 

 nana amulanies extanW" 



JANUARY— MARCH 1829. S 



