(123) 
places. The outer plates of the teeth are often nearly square 
and up to .o20 mm. high. The lamellae, about 16, are 
usually connected below by cross walls, not more than one, 
however, between adjoining lamellae. The spores in these 
specimens measure up to .028 or .0o30 mm. Upper leaf-cells 
large, up to .025 by .o70 mm. 
Bryum Brownii B. & S.? (Pohlia bryoides R. Br. ?) 
Dawson, on earth about ledges of rock. There seems to be 
some confusion with regard to this plant. My specimens are 
called a variety, ‘* pzliferum” by M. Philibert, but they are 
scarcely or not longer pointed than is shown in Fig. 8a, Tab. 
Supp. I, IV., Bryo. Eur. The peristome as figured in this 
plate, also, as far as it goes, rather agrees with my speci- 
mens, viz., the lamellae are not very numerous (14 to 16) or 
close together and the outer plates are comparatively high. 
This does not agree with Limpricht’s description, who states 
that the lamellae are numerous and close together and basal 
plates narrowly rectangular (z to 4), also that the costa of the 
leaf is excurrent into a short awn. Inthe Dawson specimens 
the 14 or 15 lamellae are joined by 1 to 3 thick cross walls be- 
tween the adjacent lamellae and the outer plates are from 
twice wider than high to nearly square. Ina packet in the 
Columbia Herbarium, are European specimens called Brownz 
from Chr. Kaurin, but the lamellae are not connected by 
vertical walls and the plants are otherwise different so tha 
they certainly are not Brownz7. The same may be said of 
Bourgeau’s specimens of ‘‘ The Palliser N. A. Expedition ; 
that is, unless true Brownz belongs to a section that does no 
have the lamellae connected by cross walls as in pendulum. 
The Dawson specimens are synoicous and antoicous, leaf 
border of one layer of cells not more thickened than within, 
spores roughened, up to .028 mm., leaf-cells below sometimes 
pitted (581). 
Since writing the above Mrs. Britton has received a letter 
from Ernest S. Salmon, in which he gives good reasons for 
believing that the type of Pokla bryoides R. Br., is not in 
existence. Taking, then, Schimper’s figures in the Bryologia 
