FLORA OF OXFORDSHIRE. 269 
3. Swere. Near Cropredy, ete. 
4. Ray. Otmoor, Rep. of Rec. Club, 1881. Parsons’ Pleasure, etc. 
5. Isis. Handborough. 
6. Thame. Near Iffley. 
P. canescens, Sm. Grey Poplar. 
Syme, E. B. viii. 149. 1300. Nym. 663. 
Denizen. Sylvestral. Tree. March, April. 
In Walker's Flora unlocalised, 1834. 
. Stour. Tadmarton. 
. Ouse. Bucknell, 
. Ray. Noke, near Kidlington. 
. Isis. Eynsham. | 
. Thame. Dorchester. 
. Thames. Woodcote. 
Dr. F. Arnold Lees noticed near Shiplake four trees of some size by the 
Thames which he thinks are var. denudata, Braun referred to P. hybrida, 
M. B. in Reich. Icones. 
NAAR DY 
P. tremula, LD. Aspen. 
Top. Bot. 373. Syme, E. B. viii. 196. 1301. Nym. 664. 
Native. Sylvestral. Woods, hedges. Sparingly distributed through 
the county, and usually as a planted tree. March. 
First record, Sib. 1794. 
Var. glabra, Syme. 
4, Ray. Headington Wick, Magdalen College Walks. 
5. Isis. Bladon Wood, see Rep. of Rec. Club, 1880. 
Var. villosa, Lang. Reich. Exc. 1633. ‘ 
4. Ray. Otmoor, Marston Fields, Headington Wick, native. 
5. Isis. Wychwood, native. 
6. Thame. Woodcote, Shotover. 
* P. nigra, L. Black Poplar. 
Comp. Syb. 561. Syme, E. B. viii. 198. 1302. Nym. 664. Bx. 506. 
Denizen. Hedges, ete. Not uncommon. Tree. March. 
First record, Sib. 1794. 
Baxter noticed Erysiphe adunca, Uredo Populina, Grev., Hrineum 
Populin., Spheria centhocarpa, E. aurewm and Xylonia populinum on 
this tree in Cowley Marsh. 
1. Stour. Sibford. 
3. Swere. Hanwell, North Newington, A. Fr. 
4, Ray. Near Heyford, Otmoor, Rep. of Rec. Club, 1881. Bayswater, 
planted commonly in Marston Meadow. Magdalen College 
Meadow. 
