SHORT NOTES. 807 
e a rosette on the surface of the water. P. natans may be 
distinguished from P. fluitans by the aiveieuks growth of the 
broad coriaceous leaves of the former; these leaves being enabled, 
by the “joint” at the base of the lam mina, to twist themselves 
into any vacant space on the surface of the Mee on which sar 
float. Indeed, when growing uncrowded, so o be able 
develop themselves naturally, they often bend heal ists the fine 
stalks until they are reversely parallel to the branch from whence 
ring. These indications of habit are here given in the 
over oe the rank vegetation, even in stations where 1 is 
rivers than of the stagnant waters of the fens, against the dense 
Sane ae which its ae of robe so ill enables it to contend. 
E narius In Norta Somerset.—At p. 284 the Rev. 
W. Moyle Bsr alludes to this plant having been reported from 
North Somerset on unknown authority. The facts connecting this 
grass with the latter vice-county are as follows. Until recently By 
e 
late Mr on whose authority the ‘Supplement to the 
New Botanists’ Guide’ brackets the plant with four allied grasses, 
‘all fo Burnham, Berro , and : r, Watson’s com- 
So, of course, I 
“This plant was collected several years since by the late Rev. 
J.C. Collins, of St. John’s Vicarage, peda. on ee high sand- 
hills between Burnham ss" Brean Down. b a specim 
in his herbarium in 1853, gathered in this locality. I have also 
