— 86 — 



all around, falcate or incurved; cells oblong-lanceolate except 

 the often yellow alar. Tufts bright green or brown with green 

 branch-tops. — Stones in rivulets r. Eur. Norway: Kaurin; E. 

 Nyman. Amer. Can.: Macoun; Waghorne. U. S.: Roell; James, 

 com. Levier. 



b. Leaves distant decurrent nearly entire; cells oblong-lan- 

 ceolate; costa often simple. 

 2r).C.pseudo-montanum Kindb. — Hypnum cat. Can. m. 



Leaves subovate-oblong often somewhat long-acuminate, aciite 

 or obtuse, denticulate at apex, falcate or incurved, larger than 

 in the last; alar cells more distinct; costa simple reaching above 

 middle. Tufts bright green. Habit of the last, but branches 

 are longer. — Stones in rivulets r. Amer. Can.: J. Macoun; 

 Waghorne; Drummond n. 206 in part. Alaska: J. M. Macoun. 

 26.C.Tiridulum Hartman. — Hypnum Hartm. skand. flora; 

 H. norvegicum Schimper. 



Leaves broad-ovate obtuse entire or slightly sinuolate at apex, 

 not distinctly falcate; alar cells hyaline; costa simple or double. 

 Tafts green. Resembles a small 0. ochraceum. — • Alp. rivulets 

 r. Eur. Norway!; J. E. Zetterstedt; Kaurin (fruiting). Amer. 

 U. S. Oregon, mount Hood: Roell. 



56. Camptothecium Bryol. eur., in part. 



A. Stem us. brown-to mentose. 



1. Tomentella. Capsule large; lid not rostrate; pedicel long 

 smooth. Leaves entire gen. large. Stem not regularly pinnate, 

 not creeping; branches straight not julaceous, often distant. 

 Tufts 5'ellowish or golden glossy, r. green or brown. Dioecious. 



B. Stem not tomentose but sometimes radiculose. 



a. Stem us. irregularly divided; branches somewhat long and 

 distant, not julaceous, often straight. Dioecious or monoecious. 



2. Luteolaria. Capsule large; lid us. rostrate; pedicel long 

 sometimes smooth. Leaves large and narrow; those of branches 

 us. denticulate. Stem often nearly eradiculose. Tufts glossy 

 yellowish or greenish. 



b. Stem us. pinnate; branches gen. short and crowded, 

 subjulaceous or julaceous, us. curved. Pedicel of capsule rough; 

 lid not rostrate. Gen. dioecious. 



3. Sericaria. Capsule large; pedicel not long. Leaves us. large, 

 those of branches denticulate. Stem rigid us. creeping. Tufts 

 us. green and silky glossy. 



4. Aureolaria. Capsule small; pedicel short. Leaves small, 

 those of branches often nearly entire. Stem not rigid, often 

 not creeping. Tufts us. golden glossy. 



