— 805 — 
exserted; pedicel somewhat long. Tufts dark green, blackish 
below, somewhat high. — Trees and rocks r. Amer. Can. Vane. 
isl.: Macoun. 
IV. Ulota Mohr. ` 
A. Leaves not or indistinctly crisped; hyaline alar cells gen. 
uniseriate or indistinct. 
a. Leaves longish not twisted; nearly all cells short. 
22.0.americanum Beauvois. — Ulota MHutchinsie (Smith) 
Hammar. 
Leaves more or less recurved princ. at base, broadly ovate- 
lanceolate gen. subobtuse at apex. Capsule thick piriform; ca- 
lyptra densely hairy. Tufts green or blackish. — On rocks or 
r. on trees, Hur. common. Sweden, Norway, Switzerl.! Amer. 
Can.: Macoun; Waghorne. 
23.0.subulatum C. M. et Kindb. — Ulota C. M. et K. l. c. 
Leaves not recurved, ovate-lanceolate subulate-filiform at apex, 
nearly appressed when dry. Capsule small. narrow-clavate. 
Tufts dark green or blackish. — Trees r. Amer. Can. Brit. Col: 
Macoun. 
b. Leaves short faintly twisted when dry; basal cells long. 
24.0.Barelayi Mitten. — Ulota Mitt.; Sulliv. icon. m.; Ortho- 
trichum Kindb. 
Leaves gen. ovate-oblong subacute, not or faintly recurved 
below, flat to the greater part. Capsule subobovate thicker 
than in O. americanum; calyptra sparingly hairy. Tufts brown- 
green. — In alp. prine. arctic districts r. Amer. Alaska: J. M. 
Macoun. U. S.: Roell. alier 
B. Leaves long very crisped; hyaline alar cells gen. indi- 
stinct. 
25.0.megalosporum Venturi. — Ulota Vent.; Orthotrichum 
Kindb.; Ulota subulifolia C. M. et Kindb. l, c. 
Leaves recurved at base, subulate-piliform at apex; upper 
cells rotundate, the basal long. Capsule small short-obovate 
 Suleate finally subcylindric; pedicel long thin; calyptra nearly 
glabrous. Stem often creeping. — Trees r. Amer. Pacif. distr. 
Can: Macoun. U. S.: Roell. 
C. Leaves more or less crisped; hyaline alar cells in several 
rows, 
a. Capsule gen. not wholly exserted; pedicel short. Leaves 
long distinetly papillose nearly opake; nearly all cells short. . 
26.0.c0uneetens Kindb. in Ottawa Natur. IV, 64. — Ulota 
camptopoda Kindb. cat, Canad, m. 
