— 51 — 



e.P.talcicuspis C. M. et Kindb. cat. Canad. m. 



Leaves broadly ovate-lanceolate nearly entire, more or less 

 acuminate; cells oval-oblong. Perichetial leaves abruptly narro- 

 wed to a somewhat short (subulate or subfiliform) often falcate 

 acumen, entire and faintly papillose; costa faint. Capsule obo- 

 vate subsymmetric; endostomial segments lower than teeth; 

 pedicel short; cilia and lid not seen. Tufts sparingly radiculose 

 green or olivaceous. Branches subjulaceous subpinnate; branch- 

 lets numerous. Corresponding to P. hr achy dados. — Rocks in 

 alp. region r. Amer. Pacif. distr. Can.: Macoun. U. S.: Eoell. 

 Y.P.oligoclada Kindb. bull. Tor. club XVII, 1890. 



Leaves from broad-ovate base abruptly narrowed to a longer 

 subulate nearly entire acumen, densely crowded not decurrent; 

 uppermost cells narrow, the others round-quadrate very small 

 with incrassate walls and not confluent. Perichetial leaves 

 longer-acuminate. Tufts sparingly radiculose dark brown. Bran- 

 ches irregularly divided; branchlets few distant. Capsules un- 

 known. — Rocks r. Amer. Pacif. distr. Can.: Macoun; Roell, 

 com . Cardot. 



n. Ptychodium Schimper in part. 



A. Leaves somewhat large, often (also when dry) distinctly 

 falcate, gen. smooth; costa not excurrent. Stem-leaves gen. 

 entire. Habit of Hypnuni (Cupressina) or Brachythenum. 

 S.P.plicata Schleicher. — Hypnum Schl.; Pseudoleskea Kindb.; 

 Lesquereuxia Lindb.; Ptychodium Schimper. 



Leaves large not or slightly decurrent, from ovate-oblong or 

 ovate-lanceolate base long-acuminate subulate; upper cells linear, 

 middle lanceolate or oblong-lanceolate. Branch-leaves us. den- 

 ticulate near apex. Perichetial leaves acuminate often costate, 

 inner with subulate acumen. Capsule suboblong us. finally 

 arcuate; peristome orange or yellow; segments not lower, us. 

 not rimose, their basal membrane nearly half as high; cilia 

 rudimentary; lid short-conic obtuse or acute; pedicel 1 — 2 c. m. 

 long. Tufts loose nearly eradiculose, brown at least below. 

 Stems much ramose often subpinnate. R. fruiting. — On rocks 

 or on ground in alp. woods gen. r. Eur. S\vitzerl. not r.! Swe- 

 den: Lindberg. 

 * P.rhsetica Kindb. n. subsp. 



Leaves entire shorter and somewhat smaller, from subovate 

 base less gradually attenuate and shorter acuminate, more 

 appressed when dry. Outer perichetial leaves abruptly acumi- 

 nate with short or indistinct costa, inner nerveless obtusate 



