WiLtrAMs: MossEs FROM TROPICAL AMERICA 573 
broadly rounded or somewhat truncate, with excurrent costa form- 
ing a stout apiculus and a few coarse, irregular teeth on either 
side ; leaf-cells of upper leaf more or less hexagonal to oblong, 
about 12 4 wide and 20 to 4o long, gradually becoming longer 
and narrower toward base with cell-walls slightly thickened and 
pitted throughout ; perichaetial leaves up to 7 mm. long, convolute 
below, gradually narrowed to a short-subulate, slightly serrulate 
apex formed by the excurrent nerve; pedicel up to 18 mm. long ; 
capsule oblong-cylindrical, erect, 3 mm. long, red at the slightly 
contracted mouth ; peristome-teeth attached about one fourth their 
length below the mouth, red below, strongly articulate, papillose 
on both sides and more or less divided along median line, either 
above or below, or sometimes throughout ; spores nearly smooth, 
up to 12 4 in diameter ; lid and calyptra not seen. 
* Posesion de Starck, Yateras, Oriente, 500 meters, May 3, 1897, 
W. R. Maxon (4427). Near H. proliferum and H. Wrighti, but 
without the flagellate branches of the first and with narrower, 
longer, thicker-walled basal cells, and differing from the second in 
the shorter, appressed leaves with more rounded point and teeth 
extending downward much less on either side. 
SYRRHOPODON Hopson (Grev.) Mitt. 
Monte Verde, Yateras, Oriente, 575 meters, April, 1907 
(4292). 
Macromitrium Husnoti Schimp. ; 
onte Verde, Yateras, Oriente, 575 meters, April, 1907 
(4283). 
-Raizoconium sprnirorme (L.) Bruch. 
Monte Verde, Yateras, Oriente, 575 meters, April, 1907 
(4370). 
AcrocrypHara Correa (C. M.) Par. 
Jaguey, Yateras, Oriente, 420 meters, May, 1907 (4347). 
NECKERA uNDULATA Hedw. 
Valley of Rio Bayamita, on rock, 900-1050 meters, April, 
1907 (3977). 
Extopon macropopus (Hedw.) C. M. : 
Near Jaguey, Yateras, Oriente, 420 meters, May, 1907 (4345; 
4359): Farallones of La Perla, north of Jaguey, 540-585 meters 
(4370). 
