WILLIAMS: CALYMPERACEAE OF NorTH AMERICA 373 
six guide cells with stereid bands above and below and outer 
cells differentiated; cells throughout upper part of leaf from nearly 
square to hexagonal, often slightly elongate, the median mostly 
5-6 uw wide and 6-8 uw long, mamillose on upper side, smooth or 
slightly mamillose or papillose on under side; cancellinae filling 
two thirds to three fourths of the leaf-base, broad and rounded 
above; inner perichaetial leaves very similar to outer but smaller; 
seta 6-7 mm. long; capsule oblong-ovate, small-mouthed, rather 
over 2 mm. long without lid, the beaked lid about two thirds as 
long; peristome a rather pale, smoothish membrane not extending 
above the mouth, often nearly entire; spores rough, 16-18 w in 
diameter; calyptra slightly rough above. [Fic. 4.] 
TYPE LOCALITY: Cuba. 
DisTRIBUTION: Mexico, Florida, Cuba, Jamaica, Porto Rico, 
Montserrat and Guiana, South America. 
ILLUSTRATION: Schwaegr. Suppl. 2: pl. 180. 
Exsiccati: Krypt. Exsic. Mus. Palat. Vindob. 1896, as 
Syrrhopodon Hobsoni. 7 
5. SYRRHOPODON BERTERIANUS (Brid.) C. Miill. Syn. 1: 539. 
1849 | 
Dicranum Berterianum Brid. Bryol. Univ. 1: 445. 1826. 
Syrrhopodon laevidorsus Besch. Rev. Bryol. 18:75. 1891. 
Apparently dioicous, male flowers not found: in rather loose, 
deep, brownish green tufts with stout stems up to 7-8 cm. high; 
stem-leaves 5—6 mm. long, from a broad, obovate, erect and clasp- 
ing base, slightly serrulate on margins above, abruptly narrowed 
to a linear, spreading-flexuous point with acute apex and thickened, 
distantly serrulate borders; costa not quite percurrent, nearly 
one third the width of upper leaf, terete, smooth on both sides; 
leaf in cross-section showing about six guide-cells in costa with 
large stereid bands above and below and outer cells differentiated 
all round, the leaf-border of a small stereid band enclosed by 
larger outer cells; cells throughout upper part of leaf distinct, 
mostly oval, 6-8 u wide by 8-12 uw long, smooth on under surface, 
mostly mamillose above; cancellinae filling one half to two thirds 
of leaf-base, broad and rounded or truncate above; perichaetial 
leaves very similar to stem-leaves; seta 10-13 mm. long; capsule 
oblong, up to 2.5 mm. long with conical, slender-beaked lid two 
thirds as long; peristome not seen; calyptra smooth; spores rough, 
spores rough, up to 16 win diameter. [FIc. 5.] 
TYPE LocaLtty: Porto Rico. 
