394 WILLIAMS: CALYMPERACEAE OF NORTH AMERICA 
part of leaf, mostly rounded or truncate above; outer perichaetial 
leaves much like stem-leaves but the base larger and irregularly 
serrate or incised above, enclosing a few very small inner leaves 
and numerous paraphyses; seta 10 —12mm. long, often bent, slightly 
rough in upper half; capsule 2 mm. long; lid with beak one half 
the capsule in length; spores rough, up to 20 win diameter. [FIG. 
10. ] 
TYPE LOCALITY: Guiana. 
DIsTRIBUTION: Martinique, Guadeloupe, Jamaica, Central 
and northern South America. 
ILLUSTRATION: Schwaegr. Suppl. pl. 98. 
II. CALYMPERES LEVYANUM Besch. Ann. Sci. Nat. VIII. 1: 290. 
1895. 
In habit somewhat like C. lonchophyllum, but stems longer, 
I cm. or more, and leaves shorter, 8-10 mm. long; stem-leaves 
from an oblong base, serrulate on margins, about 1 mm. long, 
narrowed into a ligulate-spatulate point six to eight times longer 
with broad, mostly acute, serrulate apex and thickened border 
serrulate above, becoming nearly or quite entire below the middle; 
costa not quite percurrent, smooth on both sides except near 
apex; leaves in’ cross-section showing costa with eight or ten 
guide-cells, an accessory row of four to five cells, stereid bands 
above and below with differentiated outer cells, and a leaf-blade 
of one layer of cells, with a cylindric to three-sided border of 
eight to ten rows of cells; leaf-cells rather obscure in upper leaf, 
roundish to slightly transversely elongate, mostly 3-4 u in diameter 
and from nearly smooth to minutely papillose on both sides 
teniolae wanting; cancellinae nearly filling the ovate base, of 
mostly square cells, at apex rounded or sometimes acutely angled; 
fruit unknown. [Fic. 11.] 
TYPE Locaity: Nicaragua. 
DisTRIBUTION: known only from the type locality and Cuba. 
12. Calymperes fluviatile Williams sp. nov. 
Flowers and fruit unknown: growing in rather stiff, dark 
green, loose mats; stems simple, 2-3 cm. long, with inconspicuous 
radicles; in cross-section somewhat triangular, about 2504 1 
diameter, showing a distinct central strand and outer walls com- 
posed of about three rows of thick-walled cells; leaves when dry 
subtubulose and incurved or somewhat crispate, when moist 
widely spreading, oblong-lingulate, entire, 3-3.5 mm. long by 4 
little over 1 mm. wide about half way up the leaf, somewhat 
