466 Best: REVISION OF THE 
slightly curved, subcylindric, tapering at base, greenish yellow 
changing to yellowish or reddish brown, wrinkled when dry and 
contracted below mouth; urn about 2 mm. long, 7 mm. wide ; 
exothecial cells oblong-rectangular, thin-walled ; teeth yellowish, 
linear-lanceolate, lamellate, dorsal line distinct ; endostomial band 
about one fourth the length of the teeth ; segments linear, nearly 
as long as teeth, scarcely open on the keel ; cilia rudimentary or 
none; annulus of two rows of cells ; operculum conic; calyptra 
cucullate ; spores usually smooth, 9-12 #, mature in early sum- 
mer. On the base of trees, rotten wood, rarely on stones or the 
ground. : 
Type LocaLity: Germany. 
DistriBuTIon : From Newfoundland westward through Canada 
to Montana and southward. 
ILLustRATIONS: Husnot, Musc. Gal. p/. 85. Dixon & Jame- 
son, Handbook, f/. 50. Braithwaite, Brit. Moss-Flora, 3: p/. 86. 
Limpricht, Die Laubmoose, /. 343. 
The typical European form of Z. polycarpa is not so common 
in North America as is generally supposed, and when it does 
occur it is usually somewhat smaller. Between it and L. odscura 
a number of transitional forms are met with which differ from the 
former in having their leaves smaller, straighter and more obtuse. 
In fact these forms show the results of an influence which culmi- 
nates in the production of Z. odscura, a species unknown in 
Europe. As these intermediate forms are much more common 
than those of the types, it has been thought advantageous to cover 
them, at least in part, by admitting Hedwig’s Z. gracilescens which, 
if it has no other merit, has that of convenience. 
2. Leskea polycarpa subobtusifolia (C. M. & K.). 
Leskea subobtusifolia C. M. & K.; Macoun, Cat. Can. PI. 6: 
169. 1892. 
Subsp. L. obtusifolia Kindb. Eur. & N. Am. Bry. 25. 1896. 
Tufts dirty yellowish green ; stems and branches curved at tips : 
stem-leaves subsecund, biplicate, ovate-oblong to ovate-lanceo- 
late, subacute to obtuse, obliquely pointed, the lower acuminate 
and blunt-pointed, 1 mm. long, 0.4 mm. wide ; leaf-cells as in re 
polycarpa. Macoun, Canadian Musci 533. 
Professor Macoun has kindly loaned me the duplicate of ne 
type, collected at Sproat, Pass River, B. C., as well as other cent 
terial from the same locality and referred to it. All the spect 
