ADDITIONAL NOTES, ETC. 457 



species from C. nigra." The fully radiate form passes by 

 intermediate links into ordinary C. nigra; and the other 

 book-characters of C. nigrescens may be easily found in 

 indubitable examples of C. nigra, ex. gr., the distance 

 or proximity of the involucral appendages, and their more 

 or less imperfectly covering the scales of the involucrum. 



612. Centaurea Cyanus, vol. ii. p. 89. 



I am not able at present to quote any record of this 

 species in the provinces of South Wales and the Lakes ; 

 though I think to have seen it in the latter province, very 

 likely near Ambleside. Mr. Edmondston deemed it "pro- 

 bably introduced " to the Isles of Shetland ; and he was 

 not inclined to err on the side of scepticism against 

 the nativity of plants. 



615. Centaurea Calcitrapa, vol. ii. p. 91. 



The south limit may be extended westward into Corn- 

 wall, on authority of Mr. F. P. Pascoe. 



Xd. Calendula arvensis, vol. ii. p. 93. 



Mr. Borrer records that tliis plant " gi-ew formerly dur- 

 ing several years, near Southwick, Sussex, till that part 

 of the beach was washed away." 



618. Bidens tripartita, vol. ii. p. 93. 



Province 15 may be added in the ai'ea, on authority of 

 Mr. J. T. Syme, who has seen this species in the little 

 county of Clackmannan, taken as a part of Fife in the text 

 of the present work, but as part of West Perth in the maj). 

 The north limit may accordingly be carried to Fifeshire. 

 The estimate of provinces will rise to 16. The range of 

 latitude will become 50 — 57. The Edinburgh Society's Ca- 

 talogue includes among their marked plants those of the 

 north and south sides of the Forth. That Catalogue was 

 my authority for province 14 in the area, though possibly 

 the plant may occur only in province 15, on the north 

 side of the Forth. 



VOL. ni, 3 N 



