PaLulella.] BRYACE^. 213 



acute apex : capsule erect, oblong-pyriform at the collum, cer- 

 nuous above, very long-i)edicelled, pale brown; lid conical- 

 obtuse; teeth of the outer peristome not half as long as the 

 segments; annulus simple- — Muse. Frond, i. 36, t. 21, 22; 

 Bryol. Eur. t. 309. 

 Hab. Cranberry swamps in Northern Ohio; not rare. 



3. M. Albertinii, Bruch & Schimp. Monoecious: shorter 

 and more slender than the precedhig : leaves carinate, blunt or 

 acute at the apex, the borders rellexed: flowers all unisexual: 

 pedicel and collum shorter; lid umbonate; teeth very short, 

 perforated in the middle or bifid, scarcely one-third as long as 

 the segments; annulus none. — Bryol. Eur. t. 310. 



Hak. Swamps near Yoric Factory, British America (Drummond). 



4. M. tristicha, Bruch & Schimp. Dioecious: plants 

 widely and loosely cespitose, very long, dark green : leaves 

 three-ranked, distant, more crowded toward the apex, half- 

 clasping and decurrent at base, squarrose, carinate, sharply den- 

 tate on the borders, the comal longer and narrower: male 

 flowers discoid ; perichjetium trigonal, composed of six leaves, 

 narrowly acuminate from a very broad base : capsule on a very 

 long pedicel, pyriform, incurved from the long erect collum; 

 lid convex-conical, alveolate ; teeth short, unequal, often bifid ; 

 segments appendiculate, linear, very long, three times as long 

 as the teeth, dirty yellow: spores small. — Bryol. Eur. t. 311, 

 Mnium triquetrimt, Linn. Sp. PI. 1114. 



Hai5. Peat bogs, generally with Jl/. longiseta. Lake Superior (^f/assiz, 

 Porter)] Closter, New Jersey (J.usim); Washington Terr. {Lyall); rare. 



81. PALUDELLA, Ehrh. 

 Plants loosely and widely cespitose : stems simple or dividing 

 by a simple shoot under the apex, tomentose-radiculose. Leaves 

 all equal, close, five-i-anked, decurrent, erect to the middle and 

 there abruptly reflexed, acutely carinate, irregularly denticulate 

 toward the apex and radiculose at base; perichsetial leaves 

 erect, narrower, flexuous, subvaginate ; areolation round-hexag- 

 onal, dense. Flowers dioecious, the male discoid : perigonial 

 leaves broadly ovate, apiculate. Calyptra long, very narrow, 

 fugacious. Capsule long-pedicellate, short-necked, erect or sub- 

 cernuous, oblong, smooth when dry. Lid convex, short-apicu^ 



