268 
BOTANICAL RAMBLES IN WEST NORFOLK. 
the situation of the bladders in this species compared 
with vulgaris , it is probable that the carnivorous bladders 
entrap different species. We first noted the species on 
Swannington Common (Upgate) in the autumn of 1909 ; and 
in August, 1910, it covered with a dense carpet practically 
dry areas from which water had evaporated. In June it was 
not uncommon in the sides of ditches on Barton Fen. and in 
July was growing in profusion on Foulden Common, generally 
in fairly deep pools, where it was anchored in the soil on the 
margin, creeping among Juncus roots, or among Hypnum 
cuspidatum, Hypnum fluitans, H. giganteum, H. Wilsoni and 
H. scorpioides, with bladders always hidden. A handful of 
vegetation taken from the water at the edge of the pools 
almost invariably yielded the three species of Utricularia 
already mentioned. In August there were large quantities 
of intermedia , most of it showing winter-buds on the “ Slough ” 
at Honing, where it was one of the half-dozen commonest 
species, and was chiefly associated with Hypnum giganteum 
and H. scorpioides, the bladder-stalks always being anchored 
in moss or Chara. On East Ruston Common it was also 
abundant, floating from the edges of the deep turf pits, 
with bladder-stalks always anchored, and forming dense 
mats in the shallower pools. In one pit, where there had been 
much disturbance, intermedia bladders were free-floating, but 
were green in colour, the leafage very scant, and the plants 
obviously not normal. 
On Roydon Common, scores, perhaps hundreds, of square 
yards of shallow pools were carpeted with its rich mosaic 
in July. It was chiefly associated with Hypnum scorpioides, 
though the bladder-stalk was sometimes anchored among 
roots of Juncus, &c. Here, on July 18th, we had the good 
fortune to find a plant in flower, a privilege attained by 
neither Sowerby nor Bentham. Mr. A. Bennett, F.L.S., 
says (in litt.) : “ It is no doubt very rare in flower. The only 
specimens I have seen were from Maden Decoy Bog in Dorset- 
shire, where one year (a very dry one) it flowered in 
abundance.” 
