572 MR. W. G. CLARKE ON BRECKLAND CHARACTERISTICS. 
have C. arenaria in abundance on Santon Downham Heath, 
on the western side of which it grows in such profusion that it 
is burnt down each autumn so as not to afford cover for rats, 
stoats, and weasels. It is also very abundant on the borders 
of Santon Downham Heath and Thetford Warren and on the 
slopes of the former heath near the -river. C. arenaria has 
been recorded from Elveden, where it covers large areas near 
Old and New Barnham Slips, and is also found on Thetford 
Heath (in Barnham parish) with Festuca ambigua. Ph. 
arenarium has been recorded for Barnham Heath and C. 
arenaria occurs in a patch at Euston about ioo yards south- 
east of the county bridge, and in abundance on Rushford and 
Knettishall Heath (Suffolk). Between the Little Ouse and 
Thet Festuca ambigua and Ph. arenarium have been recorded 
from Rushford Heath. The same grasses have also been 
found between Harling and Knettishall, probably on West 
Harling Heath. Carex arenaria grows abundantly near the 
pond in Shadwell Forest and also by the ancient ford of the 
Blackwater in Riddlesworth and Rushford. A patch of about 
two acres on the west side of the county bridge at Euston was 
broken up in 1905. On the northern bank of the Little Ouse, 
C. arenaria is common for about two miles north-east of 
Brandon station at the foot of the western slope of Bromehill, 
Weeting, in a patch at the top of the hill, and one immediately 
east of Grimes’ Graves plantation, and at various places 
on the lower slopes of Santon Warren. There is a big patch 
at the foot of the eastern slope of Bromehill, by the “ Drove ” 
road, and another above St. Helen’s Well, where the mounds 
which mark the ruins of St. Helen’s Church — : part of which 
was removed to another site in 1628 — are now covered with 
a dense growth. Festuca ambigua has also been recorded 
from the same locality. Further up the valley C. arenaria 
occurs in patches on Thetford Two-mile-bottom Common, 
abundantly on the western side of Thetford Abbey Heath, 
and on the river slopes towards Thetford. There is also 
another patch on Wretham Heath north of Ringmere at the 
eastern end of a valley diverging from the Little Ouse valley 
at the Two-mile-bottom and passing immediately to the 
northward of Croxton village. Carex arenaria is also found 
