— 31 — 



triangular or sublinear space. Capsule subcylindric; teeth pale 

 red; annulus broad loosed in pieces or revoluble; lid obtuse; 

 pedicel often short. Branches crowded faintly compressed. 

 Tufts dense green or brown. Monoecious. — On prostrate trees 

 r. Amer. Can.: Moser. U. S.: Sullivant, com. C. Mueller; Austin, 

 com. Macoun. 



b. Leaves denticulate nearly all around. Capsules unknown. 

 9.E.acicularis C. M. et Kindb. cat. Canad. m. 



Leaves with subovate base and subulate or filiform-pointed 

 acumen, with diificulty loosed from the stem; inner basal cells 

 narrow, angular suboval numerous, special alar r. distinct. 

 Branches julaceous. Tufts compact radiculose. Probably dioe- 

 cious. — Rocks r. Amer. Can.: Macoun. 

 lO.E.Macounii C. M. et Kindb. 1. c. 



Leaves with subovate or ovate-oblong base and subulate 

 acumen; lower basal cells suboval nearly similar not large. 

 Branches complanate. Tufts green sparingly radiculose. Dioe- 

 cious. — Logs r. Amer. Can.: J. Macoun. 



32. Platj'gyrium Bryol. eur. 

 l.P.repens Bridel. — Pterigynandrum Brid.; Platygyrium 

 Br. eur. 



Leaves recurved entire ovate-oblong or ovate-lanceolate, acu- 

 minate without filiform point; upper cells rhomboidal-oblong, 

 middle lanceolate-linear, alar quadrate often orange on a trian- 

 gular space. Perichetial leaves entire long-subulate, orange at 

 base. Capsule oval-oblong or subcylindric; teeth orange; seg- 

 ments yellow linear-subulate entire, not connated at base, shor- 

 ter than teeth without basal membrane; lid rostellate; pedicel 

 gen. not long. Tufts us. glossy green. Branches short, often 

 curved, sometimes with small branchlets to propagation. Dioe- 

 cious or pseudo-monoecious. Resembles Pylaisia and Hypnum 

 perichcetiale. — On trees or r. on rocks. Eur, not common, r. 

 fruiting. Sweden, Norway, Switzerl.! Amer. Can.: Macoun. U. 

 iS.: Sullivant, com. C. Mueller. 



'i.P.brachycladon Bridel. — Pterigynandrum Brid.; Platygyrium 

 Kindb.; Neckera C. M. syn. 



Differs from the last: Endostomial segments orange linear 

 connated at base and not shorter than teeth; lid of capsule 

 rostrate; monoecious. Branches straight elongate. — Trees r. 

 Amer. Can.: Macoun. U. S. Michigan: Purpus, com. Roell. 

 33. Tripterocladium C. Mueller in Flora 1875, as subgenus. 

 A. Branch-leaves denticulate nearly all around. 



