176 FLORA OF THE EAST RIDING OF YORKSHIRE. 



1361. Corylus Avellana. Linn., m. 

 (Hazel. "Filbert," E.R.D.). 



Native, Brit., 1-7. March, III. 



General in copses all over the Riding. 



1392. Quercus Robur. Linn., 105. 



(Oak). 



Native, Brit., 1-7. May, III. 



Common in woods and old lanes in Holderness and 

 Derwentland ; less frequent on the Wolds. Some fine trees 

 in Everingham Park, near Saltmarsh, and at Burton Con- 

 stable. Both vars., a. pedunculata and c. sessilifiora, are 

 frequent. 



1393. Castanea sativa. Mill. 



Denizen, Eng. , 1-7. June, I. 



Growing well into fine trees on the Wolds, as at Mount 

 Airy, South Cave. 



1394. Fag:us sylvatica. Linn., 67. 



(Beech). 



Native, Eng., 1-7. May, II. 



The tree of the Wolds, and, although much planted now, 

 is most likely aboriginal, as on the chalk farther south. 

 Ptolemy's place-name, " Petuaria " = beech groves, is a likely 

 one for Beverley or Brough (Mr. J. R. Boyle), where beech 

 gf roves are common enousrh. 



SALICINE^. 



1395. Salix triandra. Linn., 68. 



Native, Eng., i, 2, 7. May, III. 



Hornsea Mere (C.W.) ;* near Selby (W.N.C.). 



