248 BOTANICAL GAZETTE [OCTOBER 
age: stems creeping and copiously irregularly branched, cylin- 
drical, 60 to 100m in diameter; central strand none; cortex of 
one to two layers of thick walled cells, 5 to 8.4 in diameter ; cells 
of ground tissue thin walled, 6.5 to 13m in diameter ; branches 
simple or with few branchlets, 0.5 to Im in length, ascending: 
leaves lanceolate ovate-lanceolate or ovate, mostly long acuminate, 
point very slender, average size 90 by 225m, varying in length 
from 100 to 400 and in width from 60 to 120, widest in basal 
sixth generally above the line of insertion,denticulate or subdenticu- 
late to base, teeth in lower part of leaf formed by single or double 
papille over the transverse walls, open erect, equally spreading, 
not appressed but slightly crisped when dry, usually remote, 
occasionally crowded, ecostate; leaf cells parenchymatous at 
base, prosenchymatous above, occasionally quadrate, generally 
long rectangular in alar region, papillose on the margin over trans- 
verse walls, 8.2u wide by 12.7 long, ranging in width from 5 to 
gu and in length from 5 to 224, hexagonal to linear-hexago- 
nal in the middle of the leaf, occasionally long rectangular or 
rhomboidal in the margin, 74 wide by 27» long, varying in 
width from 4 to 8.5 and in length from 17 to 45#, linear at 
apex, 5.5“ wide by 32 long, varying in width from 4 to 7.7# and 
in length from 21.5 to 524, apical cell of leaf in most cases the 
longest; perichetial leaves ovate-lanceolate, acuminate, point 
filiform, irregularly ciliate dentate, reaching 1™™ in length, ecos- 
tate, cells short rectangular at base, linear and sometimes slightly 
vermicular above. 
Sporophyte small, 1 to 1.5%" long, reddish purple throughout at 
maturity, fading with age: seta 100 to 120m in diameter, cortex 
of one to two layers of well differentiated cells 5 to gu in diame- 
ter; central strand 12 to 28u in diameter, composed of 15 to 25 
rows of cells; cells of ground tissue 6.5 to 13 in diameter, walls 
strongly thickened: capsule symmetric, rarely slightly asymmet- 
ric, erect or suberect, subglobose to ovate, 0.5 to 1.5™™ long PY 
0.25 to 5™™ wide, slightly or not constricted under the mouth 
when dry, funnelform; cells of exothecium parenchymatous, 
regular or irregular, triangular to hexagonal, varying ae 
