368 WILLIAMS: CALYMPERACEAE OF NoRTH AMERICA 
and smooth. Capsule erect, regular, oval to cylindric, mostly 
smooth and glossy. Annulus: none. Peristome-teeth rarely 
wanting, mostly narrowly lanceolate and undivided, sometimes 
very short and irregular, usually papillose and golden brown. 
Lid conical and often long-rostrate. Calyptra cucullate, the 
base entire or somewhat split, the apex often rough. Spores 
usually rough. Gemmae often borne on the leaves, either growing 
from the upper costa or rarely from cells of leaf-blade on either 
side of the costa. [PLATEs 15, 16.] 
Type species: Calymperes Gardneri Hook. 
Leaf-margin with external cells not differing in color or length 
from those of blade within but sometimes with an inner 
stereid band. : 
Margin much thickened, forming a distinct border. 
order triangular in cross-section and more or less 
oubly serrate-winged. 
Leaf-base golden brown or reddish. 
Leaves less than 0.4mm. wide and about 1 mm. 
long, the margin sharply dentate with often 
ares erable ciliate teeth. 1. S. rigidus. 
I y over 0.8 mm. wide and about 1:5 
mm. long, the margins slightly serrulate above. 2. S. Bernoullii. 
Leaf-base mostly pale or hyaline. 
Costa very rough with papillae up to 8 mm. 
- high, more prominent on the back in the lower 
than the upper half of costa. 3. S. floridanus. 
Costa nearly smooth or much smoother on the : 
back in the lower half than in the upper half, 
with papillae up to 4 mm. high. 
Border oval in cross-section, not winged and distantly 
serrulate; cells throughout upper leaf, distinct, mostly 
oval. S. Berterianus. 
Margin not heck without a border. 6. S. martinicensts. 
Leaf-margin with hyaline or yellowish border of narrow, 
elongate cells (sometimes wanting in upper part of leaf), 
sharply defined from cells of blade within. 
Border of a mostly cylindric band of stereid cells extending 
rom or near apex to the basal part. 
Margin entire or nearly so all os except at apex of 
leaf 
. S. incompletus. 
& 
ni 
Leaves with point crispate when dry and only one or 
two times longer than the broadened leaf- 
base 
Costa smooth on both sides except at the denti- 
culate apex; leaf-cells densely covered with 3 
low papillae. ». S. Gaudichaudi. 
Costa more or less spiny dentate on back to 
