264 BULLETIN OP THE UNIVERSITY OP WISCONSIN. 



pointed, upper aggregated, larger, broad ovate, concave, margins plane, 

 netire, suddenly narrowed into a short lance-like point; costa percurrent, 

 broad and flat; cells thin walled, densely chlorophyllose, below rectangu- 

 lar, above rhombic or rhomboidal: perichsetial leaves larger, sheathing, 

 short-pointed, costa narrower, vanishing near apex: seta twisted to right 

 when dry; capsule long, neck equaling sporangium, slightly curved, gradu- 

 ally narrowed into seta, when dry faintly costate; calyptra inflated, cucul- 

 late; lid y^ as long as capsule, obliquely long rostrate from a broad base; 

 annulus compound, of two rows of cells; teeth lanceolate, undivided, often 

 perforated along middle; spores large, round or oval, papillose. Limpr. 

 Laubm. 1: 416. figs. 139, 140. Greenland. 



56. Dicranella Schreberi lenta (Wils.) Limpr. Tufts thick, about 

 4 cm. high: leaves larger and broader, plainly toothed on margin. Limpr. 

 Laubm. 1: 318. Moist earth, Washington. 



57. Dicranella parvula Kindb. Allied to D. varia: dioicous: plants 

 very short, densely cespitose in small tufts, dark green: leaves crenulate 

 all around, sub-ovate; cells short, oblong quadrate, basal linear; costa 

 very thick and brown, excurrent, denticulate above, forming at least half 

 acumen: perichsetial leaves denticulate above: capsule obovate, sub-erect 

 or inclined, without a neck, not striate; beak very short and thick; an- 

 nulus scarcely loosed; teeth orange, pale at apex, partite, without basilar 

 membrane, not papillose; pedicel pale red yellow, 1 cm. long or shorter, 

 straight or curved only at apex. Mac. Cat. 21. On the earth: Cathedral 

 Mountain, B. C. 



58. Dicranella Langloisii Een. & Card. Cespitose, pale or yellowish 

 green: stems short, 4-7 mm. long: leaves small, crowded, erect spreading 

 when moist, appressed when dry, from an oblong base shortly acuminate, 

 blunt at denticulate apex, strongly revolute on one side, slightly reflexed or 

 almost plane on other; costa stout, broad, percurrent, rounded at back; 

 leaf cells short, rectangular or sub-rectangular below, elongated, 4-7 times 

 longer than broad above: perichsetial bracts longer, longer acuminate; costa 

 short excurrent: pedicel purple; capsule suberect, oblong, incurved, red- 

 dish-brown, constricted under orifice when dry; lid large, highly convex- 

 conic, with an oblique beak; peristome purple, high, teeth bifid to above 

 middle; annulus none. Bot. Gaz. 15: 39. pi. 5. 1890. On the ground: 

 Saint Martinville, Louisiana. 



59. Dicranella leptotrichoides Een. & Card. Resembling in habit 

 Leptotrichum tortile: dioicous, small, loosely cespitose, green: stems 

 short, erect, simple: leaves erect or sub-secund, lanceolate, acuminate, 

 sub-acute or rather obtuse at the apex, quite entire, borders plane or 

 partly revolute; costa stout, percurrent; leaf cells oblong or sub-linear, 

 shorter, looser, and sub-rectangular below: perichsetial bracts scarcely dif- 

 ferent, a little longer: seta long, yellowish when young, afterwards red- 



