FLORA OF OXFORDSHIRE. 25 
NASTURTIUM. Br. 
¥ N. officinale, Br. Water Cress. 
Top. Bot. 43. Syme, E. B.i. 176.125. Nym. 35. Baxt. 271. 
Native. Paludal. Brooks, wet places. Common and generally dis- 
tributed. P. May-October. 
First record, ‘ Nast. aquat. foliis minoribus precocius. D. Dale in Newell’s 
bogs and other places’ (about Wychwood) Blackstone, 1737. 
Var. N. stifolium, Reich. Icon. ii. +. 50. 
8. Swere. Ditch near Deddington, A. Fr. Rail-side, Somerton. 
5. Isis. North Leigh. 
6. Thame. Bullingdon, perhaps this, Newd. 
Var. N. microphyllum, Reich. Shotever, Wychwood, Marston, Heading- 
ton Wick, Ibstone, etc., is only a starved state. It is often found on the 
mud recently thrown out of ditches. 
A luxuriant form with the terminal leaflet broad and large is probably 
the var. N. latifolium of Bouvier’s Flore des Alpes de la Suisse. 
The water-cress is cultivated in shallow pools near Bledlow, and con- 
siderable quantities sent to the London market. 
Nasturtium amphibium, Br. Gt. Yellow Radish. 
Top. Bot. 45. Syme, E. B. i. 181. 128. Nym. 35. 
Native. Paludal. Banks of rivers, ditches, watery places. Local. P. 
J une—September. 
First record, Sib. 1794, Sisymbrium amphibium. Unlocalised. 
3. Swere. -Canal-side, Banbury, Bees. Neithrop Canal, R. French. 
4, Ray. Otmoor, A. Fr. Canal nr. Thrupp, H. Bos. Mag. Coll. 
meadow, H. E. Garnsey. Heyfords, Kirtlington. 
5. Isis. Port Meadow, Eynsham, Binsey, Newbridge, etc. 
6. Thame. Sandford, Hb. Lawson. Kennington Island, Iffley, Dor- 
chester, Clifton Hampden, Littlemore. 
7. Thames. Caversham Common, F. A. Lees. Maple Durham, North 
Stoke, Goring. 
Berks. Iffley meadows, Radley, Pangbourne, Sonning, etc. 
Var. N. aquaticum, Sib. Nearly entire leaves, occurs with the ordinary 
form. 
Nasturtium sylvestre. Br. 
Top. Bot. 44. Syme, E. B.i. 179.126. Nym. 35. 
Native. Paludal. Wet meadows. Local. A. June—October. 
First record, Sib. 1794, Stsymbrium sylvestre, L. 
3. Swere. Third march, canal side. Rare, Gull. 
4, Ray. Otmoor, Sib.! Charlton, Horton, Marston, etc. 
5. Isis. Canal bank beyond High Bridge, Binsey, Port Meadow! Sib. 
Near Medley Lock, Bx. MSS. Wolvercote, H. Bos. Osney. 
