144 FLORA OF THE EAST RIDING OF YORKSHIRE. 



APOCYNACE^. 



1082. Vinca major. Linn. 



(Greater Periwinkle). 

 Alien. 



Londesboro' (B.) ; Welton introduced (C.W.). 



1083. "V. minor. Linn., 73. 



(Lesser Periwinkle). 



Denizen, Eng. May III. 



Kirkham Abbey (R.T.) ; Londesboro' (B.) by the old 

 sunken road near Emswell, Driffield,* where it grows abiui- 

 dantly with Geranium P/iauim, another old garden plant. 



GENTIANE^. 



1085. Blackstonia perfoliata. Huds., 60. 



(Yellow- wort). 



Native, Eng., 2, 3, 4. Aug., I. 



Wolds (R.T.) ; near Willerby* ; frequent at Spurn (Y.N. U. 

 Meeting, 1898). 



1086. Erythrsea Centaurium. Pers., 102. 



(Centuary. "Sanctuary," E.R.D.). 



Native, Brit., 1-7. July and August. 



Frequent in all divisions, but mostly near the seaside. 



10S9. E. pulchella. />. , 43. 



(Dwarf Centuary). 



Native, Brit, i, 2. August. 



On the cliff at Bridlington Quay (Mr. S. Gibson, adden- 

 dum to Barne's Flora). Probably the same plant gathered 

 by Mr. G. .\. Hill near Spurn in 1892. 



