162 THE JOURNAL OF BOTANY 
border much widened rao - formed of very narrow cells with 
pitted walls; auricles very s 
Fascicles according to tne | habitat, sometimes pyr sometimes 
close together, each of 3-4 branches, of — the two stronger are 
spre eading, he others mere against the stem; sprea ae ng branches 
usually thin, long, pointe and ee more rarely shorter and 
saersacrie or orthocladou 
nch-leaves imbricate or with recurved to squarrose apices ; 
pris huaceolite, narrowly bordered, with margin incurved above ; 
fibrillar rings on the ag surface * the upper half of the leaf; 
pores, which are gual placed Betwoatt Pee fibrils; on the outer 
ringed, the middle ones with weaker border, and the lowermost non- 
ringed and in the middle of the cell |-wall, while the others are 
semi- elliptical and placed on the commissures ; the inner and outer 
pores at times cover one other, so that in the upper half of the leaf, 
especially near the margins, complete perforation of the cell ensues; 
membranes with numerous plice. Pore-formation in the leaves 
of th e pendulous branches similar, but on the outer side near the 
apex also with large cavities. Retort-cells of the branch-cortex 
without recurved neck, with a large opening . the apex, an 
se an also with a small pore in the lower 
Chlorophyllose cells in spot isosceles- pend asp “inserted between 
e hyaline cells on the inner surface, and free on be surfaces ; 
nyultnes cells more strongly convex on the outer surfac 
Monoicous; male bran ches i in the enihiegiaviiia’ aac part cla- 
part above the base dive always non- fibrillo ose and non- porose. 
Perichetial bracts large, lingulate-spatulate, composed in the lower 
part of elongated rectangular pitted chlorophyllose cells only, m 
the upper part with both kinds of cells; hyaline cells at the apex 
at times aie rhomboid, several times septate and with reabsorbed 
membrane, and hence the apex itself is often fimbriate; usually, 
biwiee the apical part of the leaf is cucullate, and is then com- 
posed of small somewhat remarkable green cells only ; always non- 
n-poro 
large, urceolate when empty, ps eudopodium up to 4 cm. long. Spores 
yellow-brown, smooth, 25-30 p» in diameter. 
Hab. Shady swamps in forests, swampy margins of lakes, alder- 
swamps, clay-pits, &c., in e plain ms and lowland regions; much 
less common in mountai us a 
egion 
8. nim mbriatum is a soniparatively ‘but little mes sigh wey and 
a at present recognizes three main varietie 
robustum Braithw. in Sphagn. Brit. thes . No. 44 
(1877). (Syn. S. squarrosum var. laxum Braithw.i in The Sphagnacea, 
