344 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



larger and longer, ovate-lanceolate, more loosely disposed, spreading or 

 patent, gradually tapering into short, half-twisted acumen; cells chloro- 

 phyllose, alar ones larger; costa longer, reaching above middle: monoi- 

 ■cous. Mac. Cat. 196.— Queen's Co., New Brunswick. 



469. Brachythecium laevisetiiin Kindb.— Habit of B. pox)uleum: 

 plants cespitose: green, glossy: stem irregularly ramulose: leaves close, sub- 

 erect, open, ovate-lanceolate, acuminate and acute, sulcate; borders serru- 

 late from middle upwards; basal cells dilated; costa long, reaching at least 



ng th of leaf; perichsetial leaves nerveless: capsule small, incurved, ob- 

 long; outer teeth hyaline-margined, light brown; cilia short, not appendic- 

 ulate; lid highly convex, not apiculate; pedicel very smooth: monoicous. 

 Mac. Cat. 193.— On rotten logs: Gold Range, B. C. 



470. Brachythecium Idahense Ren. & Card. — Imbricate-cespitose, 

 bright green: stems depressed, creeping, irregularly pinnate; branches as- 

 cending, sub-incurved: leaves crowded, sub-secund, from an ovate base lanc- 

 eolate, long acuminate, plicate, costate to above middle, borders denticu- 

 late all around or sub-entire, plane or more or less revolute: cells linear, 

 attenuated, those of angles sub-quadrate, numerous; perichaetial leaves 

 rather suddenly acuminate, obsoletely costate or sub-ecostate: seta purple, 

 smooth; capsule horizontal, ovate, gibbous, curved; lid obtusely conic; 

 teeth lanceolate acuminate, densely trabeculate; segments broadly split; 

 cilia long, nodulose: monoicous. Bot. Gaz. 15:60. 1890. — On logs: Idaho. 



471. Brachythechim NoTse-Aiiglite Delamarei R. & C. — Stems shorter, 

 almost simple: leaves more distinctly imbricate, abruptly contracted into 

 a short point. Fl. Miq. 50. — Island of Miquelon. 



472. Brachythecium iatifolium (Lindb.) R. & C. — Near B. rivulare: 

 plants dioicous: very much smaller, straight, acute, acuminate at apex; ir- 

 regularly and remotely sub-pinnate to sub-simple; branches short, divaricate, 

 acute, simple: stem leaves pellucid, spreading, very long and broadly decur- 

 rent, rhomboid-triangular, gradually long acuminate, concave, not plicate; 

 margin recurved below broadest part, very often auriculate; costa slender, 

 vanishing at middle or a little above; cells nearly three times shorter, 

 large, rhomboid-prosenchymatous, not vermicular: fruit not seen. Hyp- 

 num Iatifolium Lindb., Musci Scand. 35. — Miquelon Is. 



473. Brachythecium pseiido-Starkei Ren. & Card.— Dioicous: loosely 

 cespitose, green: stem erect or ascending, flexuous, laxly pinnate, branches 

 elongate, attenuate: leaves not close, patulous, ovate-lanceolate, plicate 

 acuminate, acumen long, sometimes tortuous; margin generally serrate; 

 costa extending into the acumen; cells linear -rhomboidal, elongate, atten- 

 uate, alar lax soft quadrate hyaline: not fruiting. Bot. Cent. 44: 423. 

 1890.— Washington. 



474. Brachythecium rivulare obtnsulum Kindb.— Stem irregularly 

 divided; branches simple and elongate: leaves glossy, ovate, blunt or 



