NOTES ON SOME RARER NORFOLK PLANTS. 
625 
prostrate habit. A few bladders were present on the foliage 
stems, and sharply serrated leaves had unfolded from the newly- 
formed winter buds. 
At Barton Turf, in October, a J uncus marsh usually dry in 
late summer was under a foot of water. U. intermedia was 
abundant and erect in habit, the plants being easily distinguished 
by their amber colour : most of the foliage stems had a few 
bladders, and the leaves had all degrees of serration. In many 
cases a hibernating bud, terminating a colourless bladder-bearing 
shoot, had elongated three inches, the leaves being densely 
serrated. In a neighbouring Phragmites swamp, in eighteen 
inches of water, were plants of similar colour and habit, but the 
foliage leaves had no bladders on their segments. 
At East Ruston, in October, U. intermedia had an erect 
habit and densely serrated leaves, without bladders on their 
segments. At Horning, several plants were seen with bladders 
on the foliage leaves. At Foulden, plants on the margin of a 
deep pool had sporadic bladders and sharply serrated leaves. 
Bladders on the leaf segments and serrated margins are 
characters belonging to U. ochroleuca. In an elaborate mono- 
graph on the family, Professor Gluck has, however, shown that 
stem, leaf, bladder and floral axis are morphologically equivalent, 
each being subject to metamorphosis under special conditions. 
As there was reason for thinking that all we had seen was U. 
intermedia modified by abnormal climatic conditions, a series 
of representative plants was submitted to Professor Gluck, to 
whom we express indebtedness for his report. He refers all to 
U. intermedia , stating that he has not, on the Continent, found 
so great a number of transitional leaves ( iibergangsbldtter) with 
acute and serrate lobes ; he emphasises the risk of confusing 
autumnal forms with U. ochroleuca. So far as we know, U. 
ochroleuca does not occur in Norfolk. 
At Swannington, in October, Utricularia minor forma 
platyloba, Meister, occurred in deep water, with broadly 
segmented, rigid leaves, bright green colour, erect habit and 
anchored to the marsh floor. At Barton Turf, U. minor in 
dense clusters eight inches high, olive green, had the same 
