122 FLORA OF OXFORDSHIRE. 
Var. C. pedunculata, DC. Syme, E. B. viii. 121. 1274. 
(Var. b. probably of Sibthorp.) Muddy places. Rare. P. May-— 
Aug. 
First certain record, the Author, 1879. 
5. Isis. Freeland, Bruern. 
7. Thames. Stoke Row, Woodcote, Ipsden Heath, Kingstone Hill. 
Berks. Bagley Wood. 
Orv. XXVIII. CERATOPHYLLACEA, Gray. 
CERATOPHYLLUM. L. 
C. aquaticum, ZF. B. (aggregate). 
Top. Bot. 170. Syme, E. B. vii. 123. 1276. 
Native. Lacustral. Rivers, ditches. Local. P. July, Aug. 
First record, Merrett. Millefolium aquaticum cornutum. In ditches 
about Oxford, 1667. 
2. Ouse. Mixbury. 
8. Swere. Cherwell, near Twyford, 4. Fr. Cherwell, about Banbury, 
T. Bees. 
4, Ray. Near Merton. Submersum. 
5. Isis. Wolvercote, south end of Port Meadow, H. Bos. Plentiful 
about Oxford, Bax. ‘demersum. Ditchley, Medley Lock. 
6. Thame. In river two miles from Thame, Hb. Bx. ‘demersum. Be- 
tween Sandford and Nuneham, H. Bos. 
7. Thames. South Stoke, Moulsford, Rep. of Rec. Club, 1880. 
Berks. Buckland, H. Bos. Moulsford, see above. 
Orv. XXITX. LYTHRARIEZ, Juss, 
LYTHRUM. L. 
L. salicaria, L. Purple Loosestrife. 
Top. Bot. 171. Syme, E. B. iv. 2. 491. Nym. 251. 
First record, Std. 1794. 
Native. Paludal. Streamsides. Generally distributed by our rivers 
and streams, and especially abundant by the Thames, as at Pangbourne, 
‘where a glow of rich purple greets the eye, even from a considerable 
distance, wherever the Purple Loosestrife predominates’ (Mrs. 8. C. Hall). 
It is a prominent feature in paintings of Thames scenery, and is well 
represented in Vicat Cole’s ‘Iffley Mill, ete. P. July-Sept. 
** L, acutangulum, Lag. L. Grafferi, Ten. L. flexuosum, Lag. 
Alien. A specimen on mud recently dredged from the river near Osney. 
