390 WILLIAMS: CALYMPERACEAE OF NortTH AMERICA 
or less ovate base one third to one fourth the entire length of leaf 
extending into an oblong-linear blade with broadly acute apex, or 
those bearing propagulae usually abruptly narrowed to a rough, 
- stout point of variable length; leaf-margins incurved, doubly and 
irregularly serrate above, with thickened margin, below minutely 
serrulate; costa stout, often very rough on inner face above, and 
on back from apex to near the cancellinae, in cross-section showing 
about seven guide-cells with large stereid bands above and below 
and outer cells differentiated on both surfaces; cells throughout 
upper leaf mamillose and papillose, roundish, mostly 4-5 » in 
diameter; teniolae distinct to the insertion of leaf, eight to twelve 
cells in from marign in broadest part of leaf, extending about one 
half up leaf and disappearing in the thickened border; cancellinae 
extending one third to one fourth up leaf, mostly terminating 
above in acute angles and composed of square to short rectangular 
cells; perichaetial leaves few, only about one half as long as upper 
stem-leaves, enclosing numerous, very long paraphyses; seta 
dark red, erect, 5 mm. long; capsule cylindric, about 2 mm. long; 
calyptra scabrous above; spores rough, about 18 w in diameter. 
[FiG. 5.] 
TYPE LOCALITY: Caloosa, Florida. 
DIsTRIBUTION: Florida (sterile), Cuba, Jamaica (fertile), 
Porto Rico and northern South America (Mt. Guayrapurina, 
Spruce, in Mitten Herbarium, fertile). 
6. CALYMPERES NICARAGUENSE Ren. & Card. Bull. Soc. Bot. 
Belg. 337: 117. 1894 
Calymperes Carionis C. Miill. Bull. Herb. Boiss. 5: 189. 1897. 
In broad, dusky green cushions with stems 1.5-2.5 cm. high, 
bearing crowded leaves up to 4.5 mm. long, crispate when dry; 
stem-leaves from a broadly obovate or obcuneate base with mar- 
gins mostly serrulate, abruptly narrowed to a nearly linear point 
two or three times as long, with thickened, slightly serrulate 
border and serrulate, blunt apex; upper surface of leaf highly 
mamillose, under surface nearly smooth or somewhat papillose; 
costa not quite percurrent, often rough on both sides in upper 
half, mostly smooth below; leaf in cross-section near middle 
showing a semiterete costa with eight or ten guide-cells, stereid 
bands above and below, with outer cells differentiated and a leaf- 
border of a nearly cylindric band of rather small, not stereid cells; 
cells throughout upper part of leaf rather distinct, somewhat 
angular or roundish, the median about 6 u in diameter; teniolae 
mostly quite distinct, eight or ten cells in from margin, extending 
