— 39 — 



to ^li or shorter. Capsule obloDg; teeth 3'ellowish; cilia nodose 

 shorter; lid muticoiis acute. Stem pinnate; branches gen. distant, 

 often flagelliferous. Tufts dark green. — Rocks r. Amer. Can. 

 Vane, isl.: Roell 1888, Macoun 1893. 



20.I.Holzingeri Renauld et Cardot. — Thamnium Ren. et 

 Card.; Isothecium Kindb. 



Differs from the last: Leaves more obtuse, not recurved, 

 less crowded; nearly all cells suboval or broad-oval, upper round- 

 hexagonal. Stem-leaves oblong-lingulate obtusate gen. obtuse; 

 branch-leaves ovate-oblong often subacute. Lid of capsule with 

 oblique beak, — Amer. 1: U. S. Californ.: Marshall A. Howe. 



37. Pterogonium Swartz. 

 1 .P.Ornithopodioides Hudson. — Hypnum Huds.; Pterogonium 

 Lindberg; P. gracile Swartz. 



Leaves from broad-oval base gen. short-acuminate, more or 

 less sharply serrate at acumen; angular cells rotundrate-qua- 

 drate, inner basal elongate; middle cells oval; costa vanishing 

 near middle. Capsule subcylindric; lid subapiculate; calyptra 

 hairy; pedicel long. Branches thick julaceous curved when dry. 

 R. fruiting. — Rocks and trees gen. r. Eur. not r. in south, 

 distr. Switzerl.l Amer. r. U. S.: Brewer, com. Cardot. 

 38. Hylocomium Bryol. eur. 



A. Stem with gen. numerous paraphyllia. 



a. Stem simply pinnate. Leaves somewhat large; costa so- 

 metimes simple. 



I. Eu-Hjiocomium. Leaves not mamillose. Pedicel of 

 capsule smooth. 



b. Stem us. hi- or tripinnate. Leaves gen. small; costa double. 



II. Pleuroziiim. Leaves mamillose. Pedicel smooth. 



III. Hyocomium, Leaves not mamillose. Pedicel rough. 



B. Stem simply pinnate without paraphylUa. 



IV. Hypnopsis. Leaves somewhat large, sometimes mamil- 

 lose; costa often simple. Pedicel r. rough. 



I. Eu-Hylocomium. 



A. Stem-leaves serrate only at apex. Branch-leaves sharply 

 serrate or fimbriate also below middle. Branches subjulaceous 

 often tm-gid. 



l.H.pyrenaicuni Spruce. — Hypnum Spr.; Hylocomium Lindb.; 

 Hypnum fimbriatum Hartman; H. Oakesii Sull. ic. m.; Hjdo- 

 comium Schimp. 



Leaves orange at insertion; alar cells not defined; costa often 

 simple. Stem-leaves ovate acute sometimes short-acuminate; 



