278 FLORA OF OXFORDSHIRE. 
Var. fastigiata, Lindl. Irish Yew. 
Goring, Hb. Br. Mus. col. A. Dixon, not wild, and also as a planted 
shrub in many situations. 
Berks. Bucks, native. Gloster W. Northants, alien. Warwick, alien. 
* Pinus sylvestris, L. The Pine Fir. 
Syme, E. B. viii. 264. 1380. Nym.674. Bx. 389. 
Alien. Occurs as a planted tree throughout the county. 
* Larix europea, DC. Larch. 
Frequently planted, as about Tackley, Penley, Blenheim, Middleton, 
ete., and in Berks at Bagley Wood, etc. 
Ci. II. MONOCOTYLEDONES. 
Orv. LXXIV. HYDROCHARIDE, DC. 
HYDROCHARIS. L. 
H. Morsus-Ranae, L. Frog-bit. 
Top. Bot. 409. Syme, E. B. ix. 78.1444. Nym. 678. Bx. 441. 
Native. Lacustral. Ditches, pools, slow stagnant streams, Local. P. 
July, Aug. 
First record, Sid. 1794. 
4. Ray. Summertown, J. Fr. Otmoor, The Parks, Marston. 
5. Isis. Port Meadow! Hb. Lawson. Oxford, Rev. W. T. Bree in 
Purton. Ditch Canalside, H. Bos. Ditches between Canal side and 
Port Meadow, Wolvercote, Binsey. 
6. Thame. Stadhampton, W. French. Thame river, Hb. Br. Christ 
Church Meadow! H. Bos. Nuneham. 
7. Thames. North Stoke. 
Berks. Kennington, Radley. Bucks, Northants, Gloster E., Warwick, 
absent. Mr.G. D. Leslie figures this on the title-page of ‘ Our 
River.’ 
* Stratiotes aloides, D. Water Soldier. 
Top. Bot. [23.] Syme, E. B. ix. 80.1445. Nym. 678. Bx. 413. 
Alien. Planted in pond in Magdalen Meadow by Mr. Barter / 1885, 
‘In the Isis near the Cottage, Nuneham Park,’ Mr. Hewlett, Walk. Fl. 
It has no claims to be ranked as a native plant. 
Berks. Nuneham, planted. Northants, wild, but now nearly or quite 
extinct. 
