Two new Western Mosses 
By R. S. WILLIAMS 
(WITH PLATES 4 AND 5) 
Eurhynchium Taylorae 
Evidently dioicous; no % flowers found. In loose tufts with 
stout, creeping stems (in places denuded of leaves and with dense 
tufts of radicles) up to 20 cm. long and 0.44 mm. in diameter; 
cross sections show a well-defined central strand of numerous 
small cells and outer wall of about three rows of small.thick-walled 
cells; branches rather short (1 to 2 cm.), irregular and often 
distant ; stem and larger branch leaves loosely spreading, ob- 
tusely pointed, the branch leaves often truncate or praemorse at 
tip, decurrent, serrulate all round to a little above the base, re- 
flexed on margin above and near base and costate about 7% UP, 
the costa ending in spine and more or less papillose below; stem 
leaves measure up to 2.5 x 1.§ mm., middle branch /eaves 1.5 
mm. and upper branch leaves 0.875 mm. long, the lowest branch 
leaves very small, roundish and often ecostate ; inner perichaetial 
leaves ecostate or very faintly costate, abruptly narrowed to 4 
slender flexuous serrulate point and irregularly toothed and 
lacerate at base of point; leaf-cells mostly linear-vermicular, 
median .004 x .06 to .o8 mm., apical very short and irregular, 
alar forming an elongated not well-defined group of pale cells 
about .oo8 mm. wide and two to four times longer, the basal cells 
somewhat thickened and pitted, especially toward costa ; capsule 
mostly horizontal, contracted more or less under the mouth when 
dry, without lid 2.5 by 1.5 mm., lid with obliquely rostrate beak 
2 mm. long, stout, smooth seta up to 15 mm. high, annulus of two 
or three rows of cells ; peristome teeth very slender-pointed, striate 
below, papillose above, hyaline bordered, the segments more OF 
less split with mostly two somewhat appendiculate cilia betwee"; 
stomata roundish, .025 mm. in diameter; spores nearly smooth, 
up to .o14 mm. 
In size this plant most nearly approaches £. Oreganum of any 
of our North American species but is less regularly pinnate with 
smooth seta, etc. It much mere closely resembles E£. striatum of 
Europe, but is a more creeping plant with less divided stems and 
leaves never acutely pointed as in that, which also lacks the spine 
at apex of costa. 
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