( 131) 
up to 1 cm. long above: leaves more or less spirally 
ides on branches when dry, erect-spreading when moist, 
more or less linear-lanceolate, 2-3 mm. long, with broadly 
oa ane mostly serrulate in upper one third, the margins 
at above, recurved below on one side; perichaetial very 
senile to stem-leaves but a little shorter; leaf-cells all elon- 
gated with more or less thickened walls, above mammillose, 
about 8 x 12-16 p, in middle leaf arranged in distinct rows, at 
base highly papillose, paler and longer, a single row in 
margin hyaline and elongated with thin straight walls ; costa 
not quite percurrent: seta smooth, up to 1 cm. high; capsule 
short-ovate, 1.5 mm. high, ribbed below the mouth, with a 
convex-conical, long-beaked lid nearly as high; peristome 
double, the outer of teeth united below, blunt or irregular at 
apex and revolute when dry, the inner a membrane more or 
less lacerate above into narrow segments reaching almost as 
high as teeth; preperistome more or less evident, a few pale 
cells extending here and there above the rim of capsule ; 
calyptra without hairs, somewhat rough at apex, deeply in- 
ue oe spores minutely roughened, up to 32/ in 
diam 
ae ae, Apolo region, 1950 meters, July 28, 1902 
(1820). 
MAcROMITRIUM ULOPHYLLUM Mitt. 
Santa Anna, 1950 meters, Apolo region, July 28, 1902 
(1826). Determined from the rather incomplete description 
only. The pedicels are about 12 mm. high: peristome 
double, the outer of teeth mostly united, with articulations 
convexly thickened on outer face and finely papillate, the 
inner a pale, papillose membrane about as high as the outer 
and irregularly lobed or cleft above: preperistome with cells 
projecting here and there above the rim of capsule. 
Macromitrium atroviride sp. nov. 
Apparently dioicous; male flowers not found. In dark 
green, rather loose tufts with creeping stems bearing rather 
distant, erect, simple or divided, slightly radiculose branches 
up to 2.5 cm. high: stem-leaves crispate when dry, some- 
what incurved-spreading when moist, nearly linear from a 
little wider base, up to about 0.4 mm. wide and 4 mm. long, 
at apex acute and irregularly serrate, the margins flat above 
recurved on one side below; inner perichaetial leaves short, 
