pcm A EI 
1899] Kennedy, — New moss from Mt. Desert Island 79 
pidata; subcarinata; mollia ; margine inferiore revoluto e cellulis 
angustis unistratosis prosenchymatosis composito instructa. Capsula 
gymnostoma erecta vel suberecta ovata et oblonga leviter gibba, collo 
conspicuo; tandem plerumque subincurva; sub ore subobliquato 
non angustata. Annulus e triplici serie cellularum parvularum com- 
positus, persistens. Hab. in lapillis maritimis. Mt. Desert, Maine, 
U. S. A. 
Autoicous: Male flower gemmiform; radiculose; one to six 
antheridia with many paraphyses; antheridial leaves strongly nerved, 
toothed at apex, cells large; female flower with five or more achegonia 
and many (34 in one case) paraphyses. Perichaetial leaves smaller 
than the tufted ones, not toothed. Leaves octofarious, loosely dis- 
posed on lower part of stem and forming a rosette above; 3 to 5 mm. 
long by 1 mm. wide; oblong; entire ; apiculate ; margin revolute to 
above the middle; when young very chlorophyllose and in upper half 
carinate ; when old cells empty and leaf flat; stem leaves erect, not 
patent nor patulous. 
Cells at base long rectangular, from .084 mm. x .024 mm. to .156 
mm. x .036 mm. ; above rounded hexagonal or rhomboidal, from .o18 
mm. x .o21 mm. to.o24 mm. x .042 mm. The rhomboidal cells at 
apex of leaf become narrowly rhomboidal at margin and are longer 
downwards until at point where revolute margin begins they are usually 
prosenchymatous long slender (1 x 8 to 10) cells forming the revolute 
margin of the leaf and at base becoming long and narrowly parenchy- 
matous ; smooth, in section near apex a few papillae occasionally seen. 
Costa stout, excurrent in a point of variable length; in section the 
costa is seen to be developed only on the lower side of the leaf, as in 
some Tortulas. Stem round; homogeneous; without central strand 
even in the leafy part. 
Vaginule smooth; the unfertile archegonia with the paraphyses 
often bunched on one side of the vaginule as if one of the exterior 
archegonia was usually the fertilized one, and its growth left the others 
in a bunch at one side. 
Seta 7 to ro mm. long; sometimes two from same tuft: yellowish 
red, with spots or short sections of a deeper reddish brown; when 
very old deep brown. 
Capsule 1.5 mm. to 2 mm. long by .62 mm. wide; oblong-oval, erect 
unequal, pachydermous ; when very old sub-erect or slightly arcuate ; 
not urceolate nor constricted below the mouth ; from a reddish yellow 
to a deep brown color when fully ripe. No air space at base. Collum 
large with a single line of large stomata. Gymnostomous; mouth 
often oblique to the long axis. Annulus persistent, of three rows of 
very small cells. Operculum conical with a stout and often oblique 
beak. Calyptra smooth, light yellow with a dark brown apex, often 
falling with the operculum but the columella seldom attached. Spores 
yellow, papillose, ovate or rhomboidal-hexagonal seldom round ; from 
.024 mm. to .035 mm. in longest diameter. 
