996 Wisconsin Academy of Sciences, Arts, and Letters. 
At Lutsen, L . heterocolpa was found once covering a shady 
log over a sphagnum run in a cedar swamp, at least three feet 
above the moss covered ground, a very unusual habitat for the 
species. 
L. Muelleri was collected once at Black Biver on a shady 
ledge of rock below the Falls, at the bottom of the gorge, just 
above the high water line. It was growing with Scapania 
curta. L. Muelleri as collected at Black Biver resembles L. 
badensis in its small size and small trigones but the stems bear 
quite regularly well developed underleaves, and the leaf cells 
are too small to be L. badensis. 
The specimen bears plenty of perianths with the mouths con¬ 
tracted into little beaks plainly seen with the hand lens. 
L. Muelleri is closely related to L. heterocolpa which fruits 
so rarely that out of hundreds of specimens examined the past 
two years, only one perianth was observed. On the other hand 
L. Muelleri fruits freely, no gemmiperous branches occurring, 
while in L. heterocalpa, the gemmiperous branches are plainly 
the chief characteristic. 
L. Kaurini is larger than L. heterocolpa and has been found 
always associated with Preissia quadrata. Its occurence in 
the Duluth-Superior District marks a third regional station for 
the species in FTorth America. 2 
Lophozia ventricosa has always been found in the rock cre¬ 
vices and on rock ledges, at the higher altitudes in rather shady 
damp places. Its bog sister L . porphyroleuda is much more 
robust and the large perianths on the bright green plants creep¬ 
ing on rotten wood or sphagnum in company with the pale 
Scapania irrigua is strikingly noticeable, in the partially dried 
up swamp adjacent to Superior. 
L. longidens has been found only at Lutsen, Cook County, 
Minn., where it is rather common, growing on old logs in wet 
woods. The plants here are rarely tufted, of a bright green 
color, and freely gemmiperous. The angular red gemmae; 
hang at the tips of the transversely attached leaves like mina- 
3 See Jan. Bryologist 1912, Vol. 15, No. 1, p. 11. 
