WILLIAMS: CALYMPERACEAE OF NORTH AMERICA 377 
third as wide as the base, with cylindric, yellowish or hyaline 
border extending all round and entire except at the acute or some- 
what rounded, dentate apex; costa not quite percurrent, more or 
less spiny-dentate near apex on both sides, in cross-section showing 
four to eight guide-cells with stereid bands above and below, the 
outer cells on upper side and usually two or three outer cells next 
guide cells on either side below, differentiated; leaf-cells rather 
obscure, often slightly elongate, about 6 X 6u-8 X 10yn, with 
thickened, minutely papillose walls on both surfaces; cancellinae 
ending above in narrowly acute angles or sometimes somewhat 
obtuse, nearly filling leaf-base; perichaetial leaves scarcely differing 
from upper stem-leaves; seta slender, erect, red, 5-8 mm. long; 
capsule oblong-cylindric, scarcely 1.5 mm. long, with rostrate 
lid about 1 mm. long; peristome teeth lanceolate, yellowish, 
papillose, projecting above the mouth about 100, with often 
indistinct articulations; spores minutely roughened, about 12 y in 
diameter; calyptra extending two thirds down capsule, somewhat 
rough at apex. [Fic. 10.] 
TYPE LocALity: Trinidad. , 
DIsTRIBUTION: throughout the West Indies and northern 
South America to Mexico. 
II. SYRRHOPODON TENUIFOLIUS (Sull.) Mitt. Jour. Linn. Soc. 12: 
117. 1869 
Calymperes tenuifolius Sull. Proc. Am. Acad. 5: 280. 1861. 
Flowers and fruit unknown: in rather loose, pale green. to 
brown tufts with stems mostly under 5 mm. high; stem-leaves 
from a few millimeters up to over 4 cm. long, from an oblong- 
linear, entire base about 1.5 mm. long slightly narrowed to a 
filiform, somewhat grooved point with acute, dentate apex and 
hyaline or yellowish border of stereid cells entire below the apex; 
costa not quite percurrent, at apex somewhat rough to spiny- 
dentate, below on back mostly smooth, on inner side papillose, 
often, to cancellinae, in cross-section showing about six guide- 
cells with one to three accessory cells on lower side, large stereid 
bands above and below and outer cells differentiated on upper 
side only ; cells throughout upper part of leaf obscure, mostly angu- 
lar and slightly elongate, 5-6 u wide and 6-8 u long, covered on 
both sides by more or less compound papillae; cancellinae filling 
entire base of leaf except a very narrow border above of green 
cells and terminating above in mostly acute angles. [F1G. 11.] 
TYPE LocALity: Cuba. 
DistriBuTION: Cuba, Jamaica and St. Kitts. 
