FLORA OF THE EAST RIDING OF YORKSHIRE. 1 39 



1027. Campanula Rapunculus. Linn., 31. 



Denizen, Eng. 



Wressle (B) ; Archd. Pierson (O.B.G.). 



1029. Specularia liybrida. A. DC, 47. 



(Corn Bell-flower). 



Colonist, Ger., j-7. August. 



Heslington Fields ; Londesboro', Knapton, and other 

 places on the Wolds (B.) ; near Welton (C.W., i8gi) ; near 

 the Hull Docks, 1900 (J. W. Boult). 



ERICACEAE. 



1032. Vaccinium Myrtillus. Linn., 101. 



(Bilberry). 

 Native, Brit., 7. ' May, III. 



Not common in the East Riding ; but at Cliff Wood and 

 on Skipwith Common (W.N.C.), i.e., only in Derwentland. 



1038. Calluna Erica. DC, loi. 



(Common Heather). 

 Native, Brit., 2, 6, 7. August, I\'. 



None of thel" heath family are common in the East Riding. 

 This and the next two species are found almost entirely in the 

 western divisions, as at Houghton Moor, Holme-on-Spalding 

 Moor, and on Bubwith and Skipwith Commons, the 

 last situation being by far the largest heathery tract in the 

 East Riding.* A small patch of Calluna still exists near 

 Birkhill Wood, 1901. Intermingled with profusion of Gentiana 

 Pneumonanthe in flower at the same time Skipwith Common 

 in September affords a most striking and beautiful appearance. 



1040. Erica Tetralix. Linn., no. 



(Bell-heather). 



Native, Brit., 6-7. July, IV'. 



Same as the above, but very sparingly intermixed with it, 

 owing probably to lack of that peaty habitat not required to 

 such an extent b)' Calluna. 



