(257 ) 
slightly papillose, with or without more or less elongated 
solitary cilia between, from a basilar membrane extending 
above mouth one fourth height of teeth; spores not quite 
smooth, up to 12 # in in diameter. 
Near Pelichuco, 2450 meters, on damp rock, April 30, 
1902 (2780). This species is somewhat like P. laeviusculum 
C. M., but rather larger and leaves long-decurrent. 
Rhynchostegium alboviridum sp. nov. 
Monoicous: plants in low, rather compact pale-green mats ; 
stems short, with few branches and leaves mostly destroyed 
by maceration; branch-leaves complanate, rather crowded, 
up to 1.25 mm. in length, broadly ovate to rotundate, concave, 
borders flat above, recurved below, serrulate to below the 
middle, rather abruptly short-pointed or with a longer twisted 
point; costa sometimes indistinct, not prominent on the back, 
mostly vanishing near or below middle of leaf; leaf-cells 
ratous the median 7-8 # wide and up to 804 long, 
the basal much Ghare: and broader, not forming distinct 
clusters at angles; perichaetial leaves ecostate or faintly 
costate, from a broadly ovate base gradually narrowed to a 
lanceolate, entire or minutely serrulate nearly erect point, 
about one half the length of wider part of leaf; seta smooth, 
obliquely rostrate lid and broad annulus mostly adhering to 
capsule; teeth of peristome one half mm. high by one tenth 
mm. wide at base; inner segments, from a high membrane, 
broad, split along keel, with 2 or 3 cilia between, sometimes 
nearly as high ; nearly smooth spores up to 124. 
Apolo, 1500 meters, on clayey soil, March 10, 1902 (2109). 
This species is near A. campylocarpum but the leaves are 
broader and shorter with shorter costa. 
RHYNCHOSTEGIUM CALLISTOMUM Besch. 
Apolo, 1500 meters, on earth, June 28, 1902 (2089). These 
specimens have a distinct annulus, mostly adherent to the 
capsule, as do specimens of the type collection, no. 2763, 
Bourgeau, although the species is described as without annu- 
lus. I am inclined to believe the species is not distinct from 
Hurtomalconum, but have not seen good specimens of the latter 
for comparison. 
