FLORA OF OXFORDSHIRE. 153 
First certain record, the Author, 1879. It occurs by all our rivers and 
streams; at Osney it is plentiful, and elsewhere about Oxford. The 
submerged leaves are very different in appearance ; one is preserved in the 
Dillenian herb. as a Potamogeton. 
V, dioica, L. Marsh Valerian. 
Top. Bot. 215. Syme, E. B. iv. 238. 668. Nym. 336. 
Native. Paludal. Marshes, wet meadows. Locally common. P. 
April-June. 
First record, Sib. 1794. 
2. Ouse. Stoke Lyne, E. Fry. 
3. Swere. Drayton Lane, Hanwell oak plantation, not common, Bees. 
Canalside, Twyford, 4. Fr. Drayton meadow, 0. V. Aplin. 
4. Ray. Upper Heyford, Bz. 1831! Headington Wick, Sid.! Bays- 
water, Noke, Marshes and Canalside between Lower Heyford 
and Kirtlington frequent, Weston Peat Pits, fields opposite 
Mesopotamia. 
5. Isis. Cornbury, 7. Westcombe. Wychwood! H. Bos. Grafton 
Common, Canalside above Wolvercote. 
6. Thame. Bullingdon Green! Sid. Waterstock Mill, A. Fr. Albury, 
Littlemore, Shotover. 
7. Thames. Little Stoke, Stokenchurch, Hb. Bz. 
Berks. Frilford, Kennington. 
CENTRANTHUS. DC. 
* C. ruber, DC. Wall Valerian. 
Comp. Cyb. 224. Syme, E. B. iv. 232.664. Nym. 337. Bx. go. 
Valeriana rubra, L. Alien. Old walls in Oxford. Rare. Merton 
Coll. walls, Sib. With white flowers on Merton walls, Br. do. Bree in 
Purton. Wadham walls, 
7. Thames. Chalk-pit, Caversham, Hb. Br. Mus. col. A. Fr. 
VALERIANELLA. Hail. 
V. olitoria, Poll. Lamb’s Lettuce. 
Top. Bot. 216. Syme, E. B. iv. 240. 669. Nym. 339. 
Native. Agrestal, etc. Fields, banks, dry places. Local, not common. 
A. April—July. 
First record, 826. 1794. Valeriana Locusta, L. 
8. Swere. Drayton Lane, Adderbury, Gull. Broughton Fulling Mill, 
Tadmarton lime-pit, 7. Bees., rare. Near Banbury, J. Colegrove. 
Shutford, with white flowers. 
4. Ray. Stow Wood, Headington, H. Bos. Kirtlington, Northbrook 
Bridge, Middleton Stoney. 
