310 BKYACE^. [Homalothecium. 



rhomboidal. Calyptra cuculliform, hairy. Operculum conical, 

 subrostellate. Capsule cylindrical-ovate or oblong, regular, 

 erect, or somewhat arcuate. Teeth of the peristome linear- 

 lanceolate, closely articulate; segments adhering to the teeth 

 and bordering them. 



1. H. subcapillatum, Sulliv. Monoecious: leaves open- 

 erect, subimbricate, elliptical or obovate, abruptly narrowed to 

 a slender recurved acumen ; costa short, simple or forking, van- 

 ishing below the middle ; alar cells numerous, quadrate ; inner 

 perichajtial leaves sheatliing, long-acuminate, dentate at the 

 apex : pedicel rough : capsule slightly incurved ; teeth confluent 

 at base, dark red, with a broad pellucid central stripe marked 

 by a delicate medial line ; segments lining the teeth. — Mosses 

 of U. States, 63, t. 5, and Icon. Muse. 141, t. 90. Pterigynan- 

 drum subcapillatum, Hedw. Spec. Muse. 83, t. 16. 



Hab. Bark of trees in woods, with the last two species of Pylaisia. 



2. H. pseudosericeum. Dicecious: loosely cespitose, 

 irregularly branching, glossy ; branchlets short and short-cuspi- 

 date, slightly curved, turgid: stem-leaves loose, spreading, 

 slightly decurrent, rounded at base, gradually narrowed into a 

 long acute or cuspidate often half-twisted acumen, irregularly 

 and indistinctly sulcate, deeply concave, revolute on the borders 

 from the base to the middle, obscurely denticulate ; costa nar- 

 row, vanishing in the point; cells pale, inflated, narroAvly 

 linear; outer perichsetial leaves small. Ungulate, obtuse, the 

 inner broad and sheathing at base, gradually narrowed into a 

 long narrow denticulate point, nerveless: capsule tuberculose 

 above, suberect or slightly inclined, abruptly arcuate, cylindri- 

 cal, constricted at the orifice ; pedicel short, reddish, often very 

 flexuous; lid conical, obliquely rostellate; teeth robust, ferru- 

 ginous; inner membrane thin, yellow; cilia one or two. — 

 Ilypnum pseudosericeum, Muell. Regensb. Flora, Iviii. 89 

 (1875) ; Watson, Bot. Calif, ii. 412. 



Hab. Oakland and Portland, Oregon [B. B. Nevius). 



125. OYLINDROTHECIUM, Bruch & Schimp. (PL 5.) 

 Plants large, widely cespitose ; stems generally compressed, 

 subpinnately ramulose. Leaves crowded, more or less com- 

 pressed, imbricate, costate, glossy, entire, with a linear very 



