Parr 2, 1913] LEUCOBRYACEAE 161 
Autoicous: male flowers minute, nearly sessile, often quite numerous, scattered along 
the stem below the perichaetium, the pale, faintly costate or ecostate, lanceolate, entire peri- 
gonial leaves enclosing 4-10 antheridia about 0.15 mm. high, apparently without paraphyses: 
plants in compact greenish- or brownish-whige cushions, sometimes tinged with reddish or 
purple, with branching stems 0.5-3 cm. high leaves up to 6 mm., rarely to 9 mm. long, spread- 
ing or recurved, from a more or less broadened, obovate or sometimes narrowed, obcuneate 
base extending into a ligulate point 2-3 times as long with an abruptly rounded serrulate and 
apiculate apex, in cross-section near the middle showing mostly 4 layers of cells above and 3 
layers below the triangular chlorocysts; cells of the small, hyaline leaf-blade, in a single layer, 
from elongate thomboidal to rectangular; perichaetial leaves scarcely differentiated: seta mostly 
solitary, sometimes 2 from the same perichaetium, erect, 5-7 mm. long: capsule somewhat ovate 
to oblong, 1-1.5 mm. long, with several rows of transversely elongate cells about the mouth aad 
stomata, often rather obscure, in 1 or 2 rows near the base; lid obliquely rostrate, at least half 
as long as the capsule; peristome-teeth 8, golden-brown, rather distant, at base about 60 u 
wide and projecting above the mouth 130 yn, faintly, somewhat vertically striate, sometimes 
perforate along the median line: spores rough, up to 20 w in diameter. 
Type Locairy: Island of New Providence, Bahamas. 
DistriBution: Florida (also credited to Texas by Austin); Mexico, Central America, and the 
West Indies; also widely scattered throughout tropical regions. 
ILLUSTRATION: Hedw. Descr. 3: pl. 6 A. 
Exsice.: Sull. Musei Cub. Wright. 55; Aust. Musci App. 478; Ren. & Card. Musci Am. Sept. 
Exs. 213; Small, Mosses S. U.S. 52. J}. 2 é 
SMe Pepe Pree oe 
7 ita} ‘ “ee ethos i ' ; 
2. Octoblepharum cylindricum Schimp.; C. Miill. 
Syn. 1: 87. 1848. 
Autoicous: male flowers minute, usually several, on very short stalks, scattered along the 
stem below the perichaetium, the pale, ovate, acute, costate, entire perigonial leaves enclosing 
5 or 6 antheridia about 0.2 mm. long, either with or without paraphyses: plants in compact, 
pale-greenish or brownish-white tufts with stems up to 4m. high: stem-leaves mostly 5-6 mm. 
‘long, from a usually broadened, more or less ovate base narrowed to a ligulate point with an 
acute, entire or slightly serrulate, scarcely distinctly apiculate apex, in cross-section showing, 
near the apex, 2 layers of cells above and 2 below the chlorocysts, near the middle mostly 4 
layers above and 3 below with the margins of the leaf thick and rounded; cells of the hyaline 
leaf-blade sometimes partly of a double thickness of cells, from square to elongate rhomboidal or 
hexagonal, with thin pitted walls; perichaetial leaves scarcely differentiated: seta 10-20 mm. 
long: capsule erect, oblong-cylindric, 1.5-2 mm. long, with stomata in about 2 rows near the 
base and 4 or 5 rows of more or less transversely elongate cells about the mouth; peristome- 
‘teeth pale, slightly punctate, broadly lanceolate, extending above the mouth about 150 uw and 
35-40 » wide at the base, with a prominent median line and articulations; lid with a subulate 
beak about one half the length of the capsule: spores somewhat rough up to about 16u in 
diameter. 
SX 
Type LOCALITY: British Guiana. . . . 
DIstRIBUTION: Jamaica (specimen so labeled communicated by W. Hans to von Thiimen in 1869, 
now in the Jaeger herbarium in herb. N. Y. Bot. Gard.; no name of collector nor date of collection; 
perhaps not from Jamaica); also in Colombia, Guiana, and Brazil. 
3. Octoblepharum pulvinatum (Dozy & Molk.) Mitt. Jour. Linn. 
Soc. 12: 109. 1869. 
Arthrocormus pulvinatus Dozy & Molk. Prodr. FL. Bryol. Surinam. 6. 1854. 
Autoicous: male flowers several, minute, on short stalks scattered along the stem below 
“the perichaetium, the perigonial leaves ovate or ovate-lanceolate, acute, slightly serrulate or 
entire, with a narrow, pale costa, enclosing 4 or 5 antheridia 0.3 mm. long, with rather numerous 
paraphyses: plants in mostly compact, pale-green tufts with stems 0.5-3 cm. high: leaves 
fragile, 5-7 mm. long, from a usually broadened, obovate base, often abruptly narrowed to a 
ligulate point with a broad, rounded, mostly entire, apiculate apex, in cross-section showing, 
near the apex, 2 layers of cells above and 2 below the chlorocysts, at the middle mostly 4 layers 
