289 
The only specimen in the National Herbarium, among the all 
species of this genus that has a single winter bud represented, is 
one of U. intermedia collected by Engelmann in Germany in 1829; 
showing how little attention collectors have paid to this interest- 
ing organ on the submerged stems of U*ricularia. Young leaves 
—for this is what these bristle-margined bodies from the buds 
seem to be—from Engelmann’s specimen agree exactly with those 
from the Minnesota plants. At first orbicular, passing nearly 
around the axis, and having only a few primary incisions, they 
soon begin to branch out dichotomously, the bunches of bristles 
marking the apices of the leaf-divisions. This is shown in Engel- 
mann’s specimen, in which the bud begins to develop ordinary 
leaves at one end. The tufts of bristles thus at last become scat- 
tered, and persist as sharp teeth along the edges of the narrow 
leaf-divisions. 
Reichenbach, in Icones Fl. Germ., figures two hibernacula of | 
Utricularia vulgaris, representing them as of about twice the diameter 
as those of U. intermedia. Under U. mayor he states that he collected 
the hibernacula of this species abundantly near Leipzig, but found 
them never glutinous as in U. vulgaris. No figure of these buds 
is given. But for U. minor there is figured a leaf with a bud 
(“gemma”), which may be partly developed hibernaculum. The 
bud opens circinately, as do the growing ends of the ordinary leaf- 
bearing branches in the Minnesota plants (see Fig. a). And in 
Case of the hibernacula this mode of unfolding appears improbable 
till established by observation. Reichenbach describes and figures 
two more species, U. intermedia and U. Bremii, but in neither case 
Sives a reference or a figure of hibernacula. 
Some discrepancies should be mentioned between the leaves and 
bladder-appendages of U. intermedia, as figured in Reichenbach, 
and as actually appearing in the specimens. In the figure the leaf 
divisions are represented as tapering uniformly like spines, and 
show no mid-vein ; in the Minnesota specimens the leaf divisions 
are more ribbon-like, narrowing to a point only near the apex, and 
there is a distinct vein running to the apex of each division (Fig. 
b). The bladder in Reichenbach’s figure has strong few-toothed 
appendages about one-third the length of the bladder; in the 
plant under consideration these appendages are as long or longer — 
