cc IDE xu 
with faleate filiform nearly entire point; costa gen. obsolete. 
Branch-leaves broadly ovate-lanceolate; costa vanishing near or 
above middle. Capsules unknown. Stem pinnate sparingly 
radieulose. Tufts loose olive-green. Habit of Eurhynchium 
Bolenderi. — Wet places in woods r. Amer. Can. Vane. isl.: 
Macoun. 
50. Taxithelium Mitten. 
l.T.planum Bridel. — Hypnum Brid.; Taxithelium Mitt. 
Leaves from contracted base broadly suboval acute denticu- 
late sometimes short-acuminate; alar cells subrectangular. Cap- 
sule small piriform inclined; teeth yellow; segments as high; 
cilia present; lid apiculate; pedicel reddish yellow very long. 
Stem prostrate subpinnate; branches approached. — Amer, r. 
>U. S.»: Lesq. et Jam. (Cuba: Wright, com. C. Mueller). 
51. Plagiothecium Br. eur. 
A. Branches complanate. Often dioecious. 
a. Leaves undulate. 
I. Pseudo-Neckera. Leaves decurrent large gen. quite entire, 
Capsule large arcuate; lid rostrate. Branches long often simple. 
Dioecious. 
b. Leaves not undulate. 
II. Eu-Plagiothecium. Leaves decurrent gen. quite entire 
often large. Capsule oblique or straight; lid r. rostrate. Plants 
often robust. 
III. Isopterygium. Leaves not decurrent us. not large often den- 
ticulate. Capsule mostly oblique or arcuate; lid obtuse or ro- 
stellate. Plants not robust. Stem not long. 
B. Branches not or faintly compressed. Monoecious. 
IV. Pseud-Isopterygium. Leaves neither undulate nor de. 
current nor large, gen. quite entire, sometimes curved when 
dry. Capsule straight or faintly curved; lid obtuse or rostellate. 
Stem sometimes long. 
I. Pseudo-Neckera Kindb. 
LP.undulatum L. — Hypnum L.; Plagiothecium Br. eur. - 
Leaves subovate acute short-acuminate or obtusate, r. denti- 
culate at acumen, short-decurrent, gen. crowded; upper cells 
harrow linear, lower lanceolate exc. the not well-defined alar, 
. Leaves of the branchlets narrower, often long-acuminate. Capsule 
. Striate when dry; pedicel long. Branches pale or whitish green 
Sometimes subturgid. Tufts gen. loose. — Earth and siliceous 
rocks in woods. Eur. not r. Sweden, Norway, Germany, France! 
Amer. Can.: J. Macoun. . Alaska: J. M. Macoun. | 
