— 63 — 



l.R.recurvauS ilichaux. — Leskea Mich.; Raphidostegium 

 Sauerbeck et Jeeger: Hypnum Schwsegr.; Sull. icon. muse. 



Leaves recurved gen. to middle, denticulate above it, with 

 long filiform serrate point; alar cells orange. Perichetial leaves 

 gradually long-acuminate, serrate only at the short point. Cap- 

 sule suboblong curved; teeth orange; segments entire; beak long; 

 pedicel us. somewhat long. Stem red. Tufts yellowish green. 

 Dioecious but often fruiting. — Trees and logs. Amer. Can.: 

 Macoun; White; Moser; Waghorne. 

 a.R.Whitei Kindb. n. sp. 



Leaves faintly or not recurved, gen. entire below acumen, 

 with serrate filiform or subulate point; alar cells hyaline. Pe- 

 richetial leaves dentate at the long acumen. Capsule suboval 

 curved or oblique; teeth pale; segments entire; beak not long; 

 pedicel short. Stem pale or pale red. Tufts green. Monoe- 

 cious. — Trees r. Amer. Can. Ont. near Edmonton 1892: J. 

 White, com. Macoun. 



B. Leaves not distinctly curved, gen. quite entire and small. 

 Monoecious or {R. subdemissum) dioecious. 



a. Branches not julaceous. Stem radiculose. Leaves recurved. 

 S.R.demissum Wilson. — Hypnum Wils.; Raphidostegium 

 Notaris. 



Leaves ovate-oblong acute sometimes short-acuminate, r. fili- 

 form-pointo(!, gen. entire and recurved all around; alar cells 

 rotundate not large, upper lanceolate, the others linear. Peri- 

 chetial leaves subulate-acuminate. Capsule very small suboval 

 strangulate often arcuate; neck not distinct; teeth yellow, orange 

 beloNv; .'segments yellow; pedicel short. Tufts green or brown- 

 green sparingly radiculose. — Wet rocks. Eur. r. Switzerl.l 

 Engl.: Cunliflre Germany: Schimper; Boulay. .4mer. less r. Can.: 

 jNIacoun; Moser; Waghorne. U. S : com. Macoun. 

 4.R.Welwitschii Schimper. — Rhynchostegium Sch.; Raphido- 

 f.tegiurn Sauerbeck et Jaeger. 



Diifers from the last: Tufts compact bright or yellowish green 

 silky glossy and velvet-hke. Leaves ovate-oblong or ovate- 

 lanceolate, long-acuminate often filiform-pointed; alar cells larger. 

 Peristome paler. Perichetial leaves filiform-pointed. — Trunks 

 of Olea and Quercus r. Eur. Italy: Bottini; Arcangeli. 

 5 R.microcarpnm Bridel. — Leskea Brid.; Raphidostegium 

 Sauerbeck et Jeeger; Hypnum C. M.; Sulliv. ic. muse. 



Differs from R. demissicm: Leaves gen. acuminate, sometimes 

 faintly sinuolate. Capsule not strangulate r. arcuate; neck more 



