SHORT NOTES 309 
in this locality, and whether it was cigs ele tag with the Enfield 
sit - fae nearest named by Mr. A. 8. h (Journ, Bot. 1914, 
11); also what form was present. The ‘follo owing observations 
were made in November, 1914. Following the canal downward 
from Rye House the Azolla was first noticed about a ae of a 
mile above Dobbs’ Wei n the overflow from the canal at the 
weir it occurs Grisaanny. and continues in great plenty as far 
n the canal as Cheshunt Lock. Lower down it occurs more 
sarugly as far as Enfield Lock, and probably beyond. The 
whole of the material seems to correspond to the immature state 
Genoribed by Mr. W. H. Burrell (Journ. Bot. 1914, p. 270), being 
ole 
up 
surface of the water. Wherever it occurs its abundance or 
scarcity is in direct relation to that of Lemna minor, and wherever 
the latter fails to get a footing Azolla is also absent; while for 
some miles, where Azolla is abundant, it would be difficult to find 
a patch of Lemna of the size of the hand in which Azolla was 
not present. In su mixed patches it may be detected at a 
distance of fifty yards or more by the prevailing red colour. As 
to the probable cig ae of the plant in the canal, gtirny well- 
d 
miles apart; and as the canal forms the county Saxiichary: the 
area lies in the vice-counties Herts, Middlesex, and South Hssex. 
—Hzrnry Perrson 
Carex EvotutTa Hartm. In Briraw.—On J aly 8th I was col- 
as 1855. Growing with it was a larger and stiffer sedge which 
had the very hairy fruit of laszocarpa, “but the more general habit 
of small C. reparia, era plants of which were growing. * a hun 
dred yards away if not nearer. I took this to be a hybrid, ai 
Sa . 
Though not seeiemuily seen in Bilt n, Mr. Bennett says it has 
been recorded from Sweden, the Sagan Baltic a aca pg 
a 
