XXV1 FLORA OF OXFORDSHIRE. 
Here a small stream comes in which supplies water to the 
summit-level of the Oxford Canal. Passing by Williamscott 
to Banbury, the river, which has hitherto flowed through a 
broadly undulating tract, now reaches a more contracted valley, 
and cuts through ridges of more unequal elevation. Between 
King Sutton with its fine church spire, a prominent object in 
the landscape, and Aynhoe, home of the Cartwrights, the 
Cherwell is considerably reinforced by the Swale brook, whose 
three heads rising from the high western hills run at first in 
small glen-like valleys, draining that elevated tract which 
stretches from Edgehill to Tadmarton. The first of these 
heads is a stream, which flows by Horley, Drayton, and 
Wroxton; the second, the Torbrook, runs, like the foregoing, in 
a Liassic valley with Marlstone bands at some height above the 
stream, by Alkerton and Shutford ; the third passes by Epwell, 
Swalecliffe, and the peculiar pentagonal mound called Madmars- 
ton camp, and the three unite near the picturesque Broughton 
Castle, and thence flow by Bodicot and Adderbury (birthplace 
of William Cole), to the Cherwell, which is immediately after 
reinforced by the Swere. This stream comes from the high 
ground near the far-famed Rollerich Stones, and drains by its two 
heads Hook Norton, Swerford, Wigginton, South Newington, 
then dividing Barford St. John from Barford St. Michael, and 
leaving Deddington to the south, is, as it has been said, received 
into the Cherwell near Aynhoe. After a southern course of about 
2 miles the Cherwell, near Clifton, receives from the east the 
Croughton Brook; and 2 or 3 miles further on the Worton 
Brook, which runs through the park of Great Tew, by Lower 
Worton and the Castle mound, to the Cherwell near Chilgrove. 
The best botanising ground in this district is to be met with 
on the western hills, capped as they are with the Northampton 
sand. Tadmarton heath will be found to yield many of the 
species given for Tadmarton camp in the Stour district. At 
Hook Norton occur Paris quadrifolia, Polygonatum multi- 
Jlorum, Aspidiwm aculeatum, Narcissus major, Orobus tuber- 
osus, Centaurea Cyanus, Digitalis, Polygonum Bistorta, Ver- 
bena, Scolopendrium,; at Swerford Spiranthes autumnalis, 
Hypericum quadrangulum, Orobus tuberosus, Monotropa, Poly- 
gonum Bistorta, Habenaria viridis, Ophrys apifera, Spiranthes s 
