Gluck,— The Species of Utricularia of Great Britain. 617 
the terminal leaves bears 3-7 little teeth, each of which has a tuft of 
spines. The bud-leaves of U. intermedia are similar, but they have broader 
and more ovate terminal lobes. With U. ochvoleuca the bud-leaves aie 
followed by several intermediate leaves, which are a transitory form, leading 
to the typical leaves; out of the axil of the bud-leaves and intermediate 
leaves underground shoots may come out, which immediately anchor the 
plant. 
I have always found U. ochrolenca sterile in the German stations of the 
Black Forest, in spite of observations extending over several years. The 
propagation and hibernation is consequently founded, in the first place, on 
winter-buds. The conditions apparently are the same in Great Britain. In 
August I found only sterile specimens, when the plant should have flowered. 
We can assume that not only with U. ochvoleuca , but also with many other 
water-plants, the fructificative region is suppressed in consequence of the 
bud-formation. 
III. Geographical Distribution of Utricularia ochroleuca 
in Great Britain. 
Up to the present I have found U. ochroleuca living in the following 
stations : 
In Scotland : In small pools on a roadside between Boat of Garten and 
Loch Mallachi. 
In different places in the Rannoch Moor (Argyle) : (a) Loch nan 
Dubh, ( b ) Loch nan Mathair Etive, (c) in little pools between the Kings- 
house Inn and the farm Tighe Craighe-duible. 
In Ireland I found them very isolated in deep water (about 100 cm.) of 
the Glendalough (near Recess) mixed with Eriocaulon , Isoetes lacustris 
and echinospora , Pilularia , and Lobelia. 
As U. ochroleicca is also easily to be recognized in a dry condition, 
I have made a microscopic examination of the material of four English 
herbaria : 
1. From the private herbarium of Mr. Edward S. Marshall at West 
Monkton near Taunton (Somerset). 
1 . From the private herbarium of Mr. Arthur Bennett at Croydon 
(London). 
3. From the herbarium of the British Museum. 
4. From the herbarium of the Natural History Museum at Perth. 
By far the most copious material I found in Mr. Bennett’s herbarium 
and in that of the Natural History Museum at Perth. 
On the basis of this investigation the geographical distribution of 
U. ochroleuca takes the following form : 
