— 42 — 



apiculate; pedicel faintly rough. Not often fruiting. — Stones, 

 logs and earth in woods. Eur. not r. Norway, Switzerl.! Amer. 

 r. Can.: Macoun; Waghorne. 



9.H.flagelIare Dickson. — Hypnum Dicks.; Hylocomium Kindb. 

 Laubm. S. u. N. 



Leaves sharply serrate all around; angular cells dilated oval- 

 oblong very numerons. Stem-leaves from short base long-acu- 

 minate, sometimes filiform-pointed; branch-leaves shorter-acu- 

 minate. Capsule oblong; lid apiculate. R fruiting. — Wet 

 rocks near running water r. Eur. Spain! Engl.: Holt. 

 IV. Hypnopsis Kindb. 



A. Pedicel of capsule smooth. Costa of leaves us. double. 



a. Leaves denticulate mamillose very large, squarrose. 

 lO.H.triquetrum L. — Hypnum L.; Hylocomium Sch. 



Leaves densely crowded, often striate; nerves us. two. Stem- 

 leaves ovate-cordate acute sometimes short-acuminate; branch- 

 leaves longer-acuminate; angular cells dilated subrectangular 

 hyaline. Capsule arcuate, striate when dry; teeth purplish; 

 cilia long; lid acute or apiculate. Stem erect. Earth in woods, 

 gen. common. — Eur.l Amer.: Macoun etc. 



b. Leaves not mamillose, appressed when dry; those of stem 

 entire or indistinctl}' denticulate. 



ll.H.Schreberi Willdenow. — Hypnum W.; Hylocomium 

 Kindb.; Hylocomium parietinum Lindberg, 



Stem red; branches gen. not turgid. Leaves not or faintly 

 striate; upper cells lanceolate, middle sublinear, lower inner 

 oblong-lanceolate often yellow; angular cells suboval red-yellow, 

 special alar* not well-defined; costa short double. Stem-leaves 

 broad-ovate entire obtuse or apiculate; branch-leaves oblong 

 subacute denticulate at apex. Capsule suboblong arcuate; teeth 

 pale; segments open in middle; lid acute; pedicel long or short. 

 Not r. fruiting. — Earth in woods and heaths common. Eur.l 

 Amer. Macoun etc. 

 12.H.purnm L. — Hypnum L.; Hylocomium Notaris. 



Stem pale or yellowish; branches turgid. Leaves striate us. 

 green; cells green, lowest basal large suboval, alar not much 

 larger, the others gen. linear; costa short double or simple 

 reaching above middle. Stem-leaves round-oval abruptly narro- 

 wed to a short subulate point, nearly entire; branch-leaves 

 suboblong subacute denticulate all around. Capsule suboblong 

 arcuate; teeth yellow; segments split in middle; lid rostellate; 

 pedicel us. long. R. fruiting. — Earth in woods and heaths. 



