348 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



longer filiform-cuspidate, irregularly sinuolate, point patent or arcuate, 

 basal cells larger rectangular: capsule small, at base distinctly gibbous, 

 narrow, cylindric, curved; lid elongate-conic; pedicel very short, very 

 faintly muriculate: monoicous. Mac. Cat. 199. On old logs in woods: 

 New Brunswick. 



490. Brachythecinm Villardi Ren. & Card. Monoicous: similar in 

 habit to B. salebrosum: stem depressed, creeping, radiculose, pinnate, 

 branches ascending: leaves erect, imbricate or sub-secund, decurrent, 

 ovate lanceolate, long and slenderly acuminate, plicate, margin more or 

 less revolute, entire or in acumen faintly denticulate; costa reaching two- 

 thirds length of leaf; cells narrow, elongated, linear, alar cells few, quad- 

 rate: pecicel rough: remaining characters not known. Bot. Centralbl. 

 44: 422. 1890. Washington. 



491. Brachythecium cirrhosum Sch. Stems decumbent, 3-10 cm. 

 long, stoloniferous, more or less branching; branches ascending or erect, 

 inflated, julaceous: tufts yellowish or golden green: leaves imbricate, very 

 concave, sub-cochleariform, oval oblong, very abruptly contracted into a very 

 long filiform point, shining, plicate when dry, often inflexed on the borders, 

 denticulate in the upper part, sometimes entire; costa simple or double, 

 vanishing near middle; basal cells quadrate or rectangular, rounded, others 

 linear: fructification unknown. Husnot, Muse. Gall. 338. Greenland. 



492. Scleropodium caespitosnm sublsere Ren. & Card. Pedicel nearly 

 smooth, slightly rough only below capsule. Bot. Gaz. 15: 61. 1890. 

 Sauvie's Island, Oregon. 



493. Scleropodium Krausei (Mull.) Ren. & Card. Monoicous: tufts low, 

 rather robust and loose, pale green: stem sparingly branched; bran es 

 rather short, flexuous, round julaceous, turgescent, with obtuse apex: stem 

 leaves closely or loosely crowded, narrowly oblong-lanceolate, cymbiform-con- 

 cave, short pointed, point somewhat twisted, quite entire; base truncate, mar- 

 gin plane; costa very slender, yellowish, vanishing, often bifurcate; cells very 

 narrow, vermicular, alar many small pellucid; perichaetial leaves larger, 

 seta rather short, red, smooth; capsule amblystegioid-cylindric, cernuous, 

 coriaceous, ochraceous; lid conic, very short mamillate; annulus simple, 

 rather broad; peristome teeth robust, broad, long, yellow, hyaline pointed, 

 cristate; segments from a rather high yellow membrane, long, broad, sul- 

 cate, very smooth, not perforate nor gaping, cilia rudimentary, solitary. 

 Hypnum Krausei C. Miill., Flora 70: 224. 1887. Alaska. 



494. Isotheciuiu Cardoti Kindb. Rhizome creeping; secondary stems 

 pinnate, ligneous, often curved, sometimes bearing rigid long and at the 

 apex branching flagella: stem leaves ovate-lanceolate, subulate acuminate, 

 faintly denticulate below, acumen serrate and twisted above; cells often 

 yellowish, all long and narrow except basal, the alar and inner basal dark 



