.•}86 ADDITIONAL NOTES, ETC. 



Livei'j)ool ; that of Humber on autliority of Mr. J. G. 

 Baker, who finds this species frequent about Thirsk in 

 Yorkshii-e. 



119. Sincqjis incana, vol. i. p. 168. 



From the Supplement to English Botany, vol. iii. No. 

 2843, it would seem that this plant has once occurred in 

 England, introduced with foreign seeds to the coiuity of 

 Sussex, where it was observed by Mr. Borrer. 



120. Sinap'is tenuifolia, vol. i. p. 163. 



The south limit may be extended to Cornwall, on faith 

 of a specimen communicated to Mr. Pascoe, by the Rev. 



C. A. Johns. 



121. Stnapis miiralis, vol. i. p. 164. 



Eepoi-ted in Cornwall by Mr. E. T. Bennett and Mr. F. 

 P. Pascoe ; the latter not writing with confidence about 

 its true nativity or even denizenship there (Bot. Gaz. ii. 

 38). I am indebted to Mr. Purchas for a specimen from 

 Glamorgan; and Mr. Joseph Woods reports that it is 

 common about Swansea (Phytol. iii. 1060). The cha- 

 racters given in books, as a diagnosis, are apt to mislead 

 botanists, and thus cause the wrong species to be recorded 

 from some localities. The lower part of the stem of D. 

 tenuifolia is occasionally, if not usuall}', somewhat hispid, 

 though much less so than that of S. muralis ; and hence 

 the word " glabrous " should be omitted or qualified in 

 the book character (Bab. Man. and Brit. Flora) of D. 

 tenuifolia, as it misleads when small specimens or 

 branches only are examined in the herbarium. The size 

 and ramification of the old plants usually distinguishes 



D. tenuifolia in its living state. 



122# Sinapis Cheiranthus, vol. i. ]). 165. 

 So far as England is concerned, the species thus named 

 would seem to be simply S. monensis. As above men- 



