(131) 
They correspond well with the description and figures in the 
Bryologia Europaea and my specimens from the Yukon are 
the same. The species may be distinguished from hymeno- 
phylloides by the more decurrent leaves, with more rounded 
apex and by the much shorter, wider cells in margin on 
either side just below the apex. The first 2 or 3 cells on 
either side of apical cell of leaf are scarcely elongated, the 
next 2 or 3 are rhomboidal, 2 or 3 times longer than wide, 
the width being .o20 to .o25 mm. In hAymenophylloides the 
second or third cell in margin below the apical cell is about 
.O10 mm. wide and 6 to Io times longer than wide (673). 
Cinclidium stygium Swartz. Dawson. Common in swampy 
places. In fine fruit July 9. The clear, rich red border 
of the leaves at once distinguishes this plant from any A/nzum. 
The margins are mostly flat and of a single layer of thick- 
walled cells. The leaf-cells are obliquely elongated, some- 
what in rows, the inner median up to .o50 mm. long. Cell 
walls more or less thickened and pitted (6712). 
Cinchidium subrotundum Lindb. Head of Lake Bennett 
about springs. Tufts up to gcm. high. The leaves are very 
similar to the preceding but have a double layer of cells in 
the border (672). 
Aulacomnium palustre (L..) Schwaegr. Mouth of the 
Little Salmon River. Fruiting, June 16 (675). 
Aulacomnium palustre imbricatum B. &S. Dawson, very 
common in wet places. Plants about the size of furgzdum 
(676). 
Aulacomnium turgidum (Wahl.) Schwaegr. Sheep Camp, 
Dyea Creek, sterile. Dawson, very abundant, fruiting (677). 
Timmia cucullata Michx. Yukon River just above Dawson. 
Growing at the base of trees. This species is quite distinct 
from megapolitana. It occurs in Montana and appears to be 
the commonest species of the genus in the eastern United 
States. It differs from megapolitana in the wider mouthed 
capsule, more curved and smooth when dry, the exothecal 
cells, also, are elongated and not sinuous walled, the stomata 
roundish, about .048 mm. in diameter, sometimes even 
